UMRBPP WSR 88D KUDX Level II Base Data 1.0 General Description The Weather Surveillance Radar - 1988 Doppler (WSR-88D) KUDX Level II Base Data Set, provided for the Upper Missouri River Basin Pilot Project (UMRBPP), contains mean radial velocity, reflectivity, and spectrum width at the full spatial and temporal resolution of the radar. Data are available for the periods from 2012 UTC 4 April to 2254 UTC 6 May 1999 for the Rapid City, South Dakota (KUDX) site. There are ocassional periods without data that are detailed in Section 2.0 below. The University Corporation for Atmospheric Research/Joint Office for Science Support (UCAR/JOSS) provides these data as is and no additional quality control have been applied. 2.0 Data Gaps The following time periods are without data: 04/07/1999 15:28 - 04/07/1999 15:46 18 min 04/08/1999 18:45 - 04/09/1999 12:19 17 hrs 34 min 04/09/1999 15:37 - 04/09/1999 17:12 1 hr 35 min 04/13/1999 00:32 - 04/13/1999 01:58 1 hr 26 min 04/14/1999 14:40 - 04/14/1999 15:34 54 min 04/18/1999 22:34 - 04/19/1999 00:19 1 hr 45 min 04/19/1999 00:25 - 04/19/1999 20:26 20 hrs 01 min 04/22/1999 00:48 - 04/22/1999 12:46 11 hrs 58 min 05/01/1999 00:50 - 05/01/1999 14:23 13 hrs 33 min 05/01/1999 22:32 - 05/02/1999 02:41 4 hrs 09 min 05/03/1999 14:47 - 05/03/1999 17:41 2 hrs 54 min 3.0 Note on Remainder of Document The remainder of this readme file is from the National Climatic Data Center and describes the data and format in detail. This document (except for Section 13 which describes what is available by tape number) is also available on-line from NCDC at: http://www.ncdc.noaa.gov/ol/radar/leveliidoc.html 4.0 Introduction Weather Surveillance Radar - 1988 Doppler (WSR-88D), or NEXt Generation RADar (NEXRAD), Level II data are the base digital data produced by the signal processor (mean radial velocity, reflectivity, and spectrum width) at the full spatial and temporal resolution of the radar. Level II data also contain status messages, performance/maintenance data, volume scan strategy, clutter filter bypass map, and wideband communication console messages. These are the same data transmitted over high-speed, wideband communications to the WSR-88D Radar Product Generator (RPG) for processing by the meteorological analysis algorithms. Initially it was thought that Level II recorders would be used at selected sites, and only when significant weather events were taking place. As system development progressed, it became evident that the Level II data would be of vital importance to ensure proper calibration of the radars and for use by researchers to investigate events in more detail than would be possible by using the Level III products. The Level II data can also be used to test revised algorithms that may later be applied to operational use. The NEXRAD agencies (Departments of Commerce, Defense, and Transportation) recognized the value of Level II data. In June 1994, the agencies agreed to record Level II data throughout the WSR-88D network. The Level II recording is not essential to the operational use of the WSR-88D system. The NEXRAD agencies agreed to certain procedures to minimize the impact of Level II data collection on the operations of base weather stations, forecast offices and FAA control locations. The priority of Level II recorder maintenance, reloading of tapes and continuous recording of data will be assigned by the local site management. 5.0 Recording The vast amounts of data collected at the Radar Data Acquisition (RDA) site made it mandatory that the most economical recording devices and media available at that time be used. It was determined that EXABYTE tape drives and 8mm tapes provided the most viable system. Depending on operation of the radar, the recorder model used, and station requirements, one tape may be filled every 1.8 days for each site. Data grade tapes are used for recording and archiving. Initially, sites were equipped with EXABYTE 8200 recorders. These tapes can contain up to 2.3 gigabytes per tape. Later, EXABYTE 8500 recorders were installed which record at higher density with up to 4.7 gigabytes per tape. Also available are 8500c (capable of recording in a standard compressed mode), and 8505 which is a half height drive fully downward compatible. The 8505 records up 4.7 gigabytes in an uncompressed mode. 6.0 Processing and Archiving The Level II recorder system consists of an 8mm reorder, 10-tape jukebox (automated sequential loading of new tapes), an uninterruptable power supply ans a controller board seated in the RDA computer. Under jukebox operation the 10-tape supply will last 11 to 27 days depending on the radar scanning strategies used. Tapes are received at the National Climatic Data Center (NCDC) from the individual sites in 10-tape cases. Incoming tapes are processed on a series of 8505 EXABYTE drives, reblocked, cataloged, inventoried, and archived. The original tapes are sent to an off-site storage facility for security back-up to the NCDC NEXRAD files. 7.0 Special Note The WSR-88D is a very complex system. Program modifications and engineering changes are rather constant features during the phase-in process. Some early pre-production models experienced considerable difficulties in the recording of Level II data. Even today, tapes are received that contain spurious, erroneous, or illegal configurations. We have attempted to recover as much data as possible from these problem tapes. The user is cautioned that these anomalies may be encountered while reading the archive tapes. Special care must be taken to ensure that illegal configurations do not contaminate any summaries or statistical studies. NCDC will be glad to assist in solving problems encountered in reading the tapes, but technical questions about the data themselves must be addressed to the: NWS/Operational Support Facility Operations Branch 1200 Westheimer Dr. Norman, OK 73069 Telephone: (405) 366-6530 FAX: (405) 366-6550 Definitive information about all aspects of the Doppler radar is contained in Federal Meteorological Handbook No. 11 (FMH-11), Volumes A through D. These may be ordered from the National Climatic Data Center. 8.0 Data Availability As stated previously, all NCDC archives are being generated on EXABYTE 8505 drives. Users must specify whether they require 8200 or 8500 mode tapes. If copies are requested in the 8200 mode, two or more output tapes may be required. A header record will appear on each output tape. Each 8mm tape records approximately 10 hours of Volume Coverage Pattern 11 (VCP 11), 18 hours of VCP 21, or 40 hours of VCP 31 or 32 using the EXABYTE 8200 mode. Using the EXABYTE 8500 mode doubles both the storage capacity and number of hours of data possible per 8mm tape. 9.0 Format HEADER FILE: The first file on tape contains only one 31616 byte record. This record is called the header record. HEADER RECORD: This 31616 byte "physical record" is divided into 494 "logical records" of 64 bytes each with position 1 as the first byte. POSITIONS FORMAT DESCRIPTION 1 - 8 C*8 Always ARCHIVE2 9 - 12 C*4 4-letter site ID. e.g. KLMB 13 - 18 C*6 NCDC tape number. e.g. N00001 19 Blank 20 - 28 C*9 Date tape written. dd-MMM-yy e.g. 19-FEB-93 29 Blank 30 - 37 C*8 Time tape written. hh:mm:ss. e.g. 10:22:59 (local time) 38 Blank 39 - 43 C*5 Data Center writing tape: RDASC or NCDC (Left justified, blank filled) 44 - 48 C*5 WBAN Number of this NEXRAD site. (This is a unique 5-digit number assigned at NCDC. Numbers are contained in the NCDC NEXRAD Station History file (WSR-88D RDA LOCATIONS). The file also contains the four letter site ID, Latitude, Longitude, Elevation, and Standard location name.) 49 - 53 C*5 Tape output mode. Current values are 8200, 8500, 8500C 54 - 58 C*5 A volume number to be used for copies and extractions of data from tapes. The form would be VOL01, VOL02, VOL03 ....VOLnn. 59 - 64 Blank (Available for future use.) 65 - 31616 May be used for internal controls or other information at each archive center. Information of value to users will be documented at the time of tape shipment. During the process of copying archive tapes, positions 1-18 and 44-48 will be duplicated. New values will be written in positions 19-43 and 49-58. 10.0 Data Files A new data file is created upon completion of a volume scan. A data file contains a title, a complete radar volume scan (360 degree revolutions at each specified elevation cut) of base data, digital radar data message, and any control/response messages from the RDA to the RPG. The title is the first record located in each data file and contains a file name, creation date, and creation time. After the title record through the remainder of the data file, variable length records containing base data intermixed with control/response messages are recorded. Messages and base data are distinguishable by a message header coded for either digital radar base data or one of the thirteen types of messages. The message header uses a format common to both data and messages and is included in each 2432 byte packet. Depending on the predefined volume scan strategy (selected elevations, sweep rate, pulse rate etc.) used during the collection period, each data file could contain either five, six, or ten minutes of base data. Control/response messages are used during actual operations and are of limited use for post analyses. 11.0 Data Types Supported Within Data Files A Concurrent minicomputer serves as the host computer for generation of all Archive Level II data. Depending on the computer used for reading the tapes, the data types may be different from those used in the Concurrent system. The Concurrent computer byte (8 bits) structure places bit 0 as the left most bit and designates bit 0 as the Most Significant Bit (MSB). Bit 7 for a byte, bit 15 for a halfword (2 bytes), bit 31 for a fullword (4 bytes) and bit 63 for a double word (8 bytes) are all the Least Significant Bit (LSB) for their respective data formats. Level II is recorded using the following data types: Unsigned byte (byte) - number ranging from 0-255 Character (C) - Standard ASCII characters Signed Short Integer (I*2) - Most Significant Bit (MSB) is the sign bit (bit 0). (1-Negative, 0-Positive). Signed Long Integer (I*4) - MSB (bit 0) is the sign bit. Single Precision Real (R*4) - MSB (bit 0) is the sign bit (positive), bit 1-7 is the exponent in excess-64 notation format, and bit 8-31 is the fraction field. An example may be helpful: Starting with 4180 69E8 (hex), the sign bit = 0 (positive), the exponent = +1 [e.g. 41 (hex) converted to 65 (dec) - 64 (excess 64 notation) = +1], and the fraction 8069E8 (hex) shifted by exponent of +1 gives 8.069E8 (hex). To convert 8.069E8 (hex) to decimal, start with the whole number 8 (hex) which in this case equals 8 (dec). Next, the precision of the fraction .069E8 must be noted. This fraction has 5 digits of precision. Next, the fraction portion in hex (069E8) is converted to decimal (27112) and divided by 16 raised to the power of the precision of the fraction (5). In other words 27112/(16**5) = .02585 plus the whole number 8, gives 8.02585 in decimal. 12.0 Data Records Within the data file, base data and control/response messages are stored using a variable record-length structure. The convention here is to begin with byte 0 as the first byte. Included as the first record of each data file is a volume scan title containing the following information: Bytes Format Description 0-8 C*9 Filename (root) - "ARCHIVE2." 9-11 C*3 Filename (extension) - "1", "2", etc. 12-15 I*4 Modified Julian Date referenced from 1/1/70 16-19 I*4 Time - Milliseconds from midnight (UTC) of the day when the file was created. 20-23 Unused All remaining records in the data file are composed of data and command/response messages which are initially stored in separate 2432 byte packets within an RDA memory buffer. During the archive process the packets are copied from memory and grouped together to form a record. Record lengths are variable and are always sized in multiples of the 2432 byte packets. During the reblocking process, physical records are set to 31616 bytes (2432 x 13). The following example shows a portion of one packet which includes Concurrent computer Channel Terminal Manager (CTM) information, a message header, and a digital radar data message containing reflectivity only. 0000 0000 0980 0000 0002 0000 04B8 0001 0060 1E9E 04B0 1841 0001 0001 0480 14A2 1E9E 1234 6530 0059 0001 0058 0001 0000 FE89 03E8 00FA 01CC 0000 0001 4180 69E8 0064 0000 0000 0000 0015 0000 0000 0000 0000 0064 0000 0000 0000 FFF4 0064 0000 0000 0000 0000 0000 0000 0000 0000 0000 0000 0000 0000 0000 0000 0000 0000 0000 005A 5A00 0070 6D51 6455 6060 4F54 0040 5C3F 4049 4900 4D42 4349 434E 4B3D 4430 4340 3F3D 4644 4443 3A3D 473F 3A3A 3D3D 3C45 3A43 433C 3E43 413C 393F 3F40 4038 (etc.) Using the above example, each portion of the packet is described in detail. Remember, this packet may be one of several contained in one record within the data file. Bytes 0-11 (halfwords 1-6) Channel Terminal Manager (CTM) information: 0000 0000 0980 0000 0002 0000 04B8 0001 0060 1E9E 04B0 1841 0001 0001 0480 14A2 Archive II (the data tape) is a 1E9E 1234 6530 0059 0001 0058 0001 0000 copy of messages or data packets FE89 03E8 00FA 01CC 0000 0001 4180 69E8 prepared for transmission from the 0064 0000 0000 0000 0015 0000 0000 0000 RDA to the RPG. CTM information is 0000 0064 0000 0000 0000 FFF4 0064 0000 attached to a message or data 0000 0000 0000 0000 0000 0000 0000 0000 packet for checking data integrity 0000 0000 0000 0000 0000 0000 0000 0000 during the transmission process 005A 5A00 0070 6D51 6455 6060 4F54 0040 and is of no importance to the base 5C3F 4049 4900 4D42 4349 434E 4B3D 4430 data (omit or read past these 4340 3F3D 4644 4443 3A3D 473F 3A3A 3D3D bytes). 3C45 3A43 433C 3E43 413C 393F 3F40 4038 (etc.) Bytes 12-27 (halfwords 7-14) Message Header: 0000 0000 0980 0000 0002 0000 04B8 0001 This information is 0060 1E9E 04B0 1841 0001 0001 0480 14A2 used to identify 1E9E 1234 6530 0059 0001 0058 0001 0000 either base data or one of thirteen FE89 03E8 00FA 01CC 0000 0001 4180 69E8 types of messages that may follow 0064 0000 0000 0000 0015 0000 0000 0000 in bytes 28 - 2431. This header 0000 0064 0000 0000 0000 FFF4 0064 0000 includes the information indicated 0000 0000 0000 0000 0000 0000 0000 0000 below: 0000 0000 0000 0000 0000 0000 0000 0000 005A 5A00 0070 6D51 6455 6060 4F54 0040 5C3F 4049 4900 4D42 4349 434E 4B3D 4430 4340 3F3D 4644 4443 3A3D 473F 3A3A 3D3D 3C45 3A43 433C 3E43 413C 393F 3F40 4038 (etc.) Halfword Format Description 7 I*2 Message size in halfwords measured from this halfword to the end of the record. 8 I*1 (Left Byte) Channel ID: 0 = Non-Redundant Site 1 = Redundant Site Channel 1 2 = Redundant Site Channel 2 8 I*1 (Right Byte) Message type, where: 1 = DIGITAL RADAR DATA (This message may contain a combination of either reflectivity, aliased velocity, or spectrum width) 2 = RDA STATUS DATA. 3 = PERFORMANCE/MAINTENANCE DATA. 4 = CONSOLE MESSAGE - RDA TO RPG. 5 = MAINTENANCE LOG DATA. 6 = RDA CONTROL COMMANDS. 7 = VOLUME COVERAGE PATTERN. 8 = CLUTTER CENSOR ZONES. 9 = REQUEST FOR DATA. 10 = CONSOLE MESSAGE - RPG TO RDA. 11 = LOOP BACK TEST - RDA TO RPG. 12 = LOOP BACK TEST - RPG TO RDA. 13 = CLUTTER FILTER BYPASS MAP - RDA to RPG. 14 = EDITED CLUTTER FILTER BYPASS MAP - RPG to RDA. 9 I*2 I.D. Sequence = 0 to 7FFF, then roll over back to 0. 10 I*2 Modified Julian date starting from 1/1/70. 11-12 I*4 Generation time of messages in milliseconds of day past midnight (UTC). This time may be different than time listed in halfwords 15-16 defined below. 13 I*2 Number of message segments. Messages larger than message size (halfword 7 defined above) are segmented and recorded in separate data packets. 14 I*2 Message segment number. Bytes 28-127 (halfwords 15-64) Digital Radar Data Header: 0000 0000 0980 0000 0002 0000 04B8 0001 This information describes the 0060 1E9E 04B0 1841 0001 0001 0480 14A2 date, time, azimuth, 1E9E 1234 6530 0059 0001 0058 0001 0000 elevation, and type FE89 03E8 00FA 01CC 0000 0001 4180 69E8 of base data included 0064 0000 0000 0000 0015 0000 0000 0000 in the radial. This 0000 0064 0000 0000 0000 FFF4 0064 0000 header includes the 0000 0000 0000 0000 0000 0000 0000 0000 following 0000 0000 0000 0000 0000 0000 0000 0000 information: 005A 5A00 0070 6D51 6455 6060 4F54 0040 5C3F 4049 4900 4D42 4349 434E 4B3D 4430 4340 3F3D 4644 4443 3A3D 473F 3A3A 3D3D 3C45 3A43 433C 3E43 413C 393F 3F40 4038 (etc.) Halfword Format Description 15-16 I*4 Collection time for this radial in milliseconds of the day from midnight (UTC). 17 I*2 Modified Julian date referenced from 1/1/70. 18 I*2 Unambiguous range (scaled: Value/10. = KM). 19 I*2 Azimuth angle (coded: [Value/8.]*[180./4096.] = DEG). An azimuth of "0 degrees" points to true north while "90 degrees" points east. Rotation is always clockwise as viewed from above the radar. 20 I*2 Radial number within the elevation scan. 21 I*2 Radial status where: 0 = START OF NEW ELEVATION. 1 = INTERMEDIATE RADIAL. 2 = END OF ELEVATION. 3 = BEGINNING OF VOLUME SCAN. 4 = END OF VOLUME SCAN. 22 I*2 Elevation angle (coded:[Value/8.]*[180./4096.] = DEG). An elevation of "0 degree" is parallel to the pedestal base while "90 degrees" is perpendicular to the pedestal base. 23 I*2 RDA elevation number within the volume scan. 24 I*2 Range to first gate of reflectivity data (METERS). Range may be negative to account for system delays in transmitter and/or receiver components. 25 I*2 Range to first gate of Doppler data. Doppler data - velocity and spectrum width (METERS). Range may be negative to account for system delays in transmitter and/or receiver components. 26 I*2 Reflectivity data gate size (METERS). 27 I*2 Doppler data gate size (METERS). 28 I*2 Number of reflectivity gates. 29 I*2 Number of velocity and/or spectrum width data gates. 30 I*2 Sector number within cut. 31-32 R*4 System gain calibration constant (dB biased). 33 I*2 Reflectivity data pointer (byte # from the start of digital radar data message header). This pointer locates the beginning of reflectivity data. 34 I*2 Velocity data pointer (byte # from the start of digital radar data message header). This pointer locates beginning of velocity data. 35 I*2 Spectrum-width pointer (byte # from the start of digital radar data message header). This pointer locates beginning of spectrum-width data. 36 I*2 Doppler velocity resolution. Value of: 2 = 0.5 m/s 4 = 1.0 37 I*2 Volume coverage pattern. Value of: 11 = 16 elev. scans/ 5 mins. 21 = 11 elev. scans/ 6 mins. 31 = 8 elev. scans/ 10 mins. 32 = 7 elev. scans/ 10 mins. 38-41 Unused. Reserved for V&V Simulator. 42 I*2 Reflectivity data pointer for Archive II playback. Archive II playback pointer used exclusively by RDA. 43 I*2 Velocity data pointer for Archive II playback. Archive II playback pointer used exclusively by RDA. 44 I*2 Spectrum-width data pointer for Archive II playback. Archive II playback pointer used exclusively by RDA. 45 I*2 Nyquist velocity (scaled: Value/100. = M/S). 46 I*2 Atmospheric attenuation factor (scaled: [Value/1000. = dB/KM]). 47 I*2 Threshold parameter for minimum difference in echo power between two resolution volumes for them not to be labeled range ambiguous (i.e.,overlaid) [Value/10. = Watts]. 48-64 Unused. Bytes 128-2431 (halfwords 65-1216) Base Data: 0000 0000 0980 0000 0002 0000 04B8 0001 This information includes the three 0060 1E9E 04B0 1841 0001 0001 0480 14A2 base data moments; reflectivity, 1E9E 1234 6530 0059 0001 0058 0001 0000 velocity and spectrum width. FE89 03E8 00FA 01CC 0000 0001 4180 69E8 Depending on the collection method, 0064 0000 0000 0000 0015 0000 0000 0000 up to three base data moments may 0000 0064 0000 0000 0000 FFF4 0064 0000 exist in this section of the 0000 0000 0000 0000 0000 0000 0000 0000 packet. (For this example, only 0000 0000 0000 0000 0000 0000 0000 0000 reflectivity is present.) Base data 005A 5A00 0070 6D51 6455 6060 4F54 0040 is coded and placed 5C3F 4049 4900 4D42 4349 434E 4B3D 4430 in a single byte and 4340 3F3D 4644 4443 3A3D 473F 3A3A 3D3D is archived in the 3C45 3A43 433C 3E43 413C 393F 3F40 4038 following format: (etc.) Halfword Format Description 65-294 BYTE Reflectivity data (0 - 460 gates) (coded: [((Value-2)/2.)-32. = dBZ], for Value of 0 or 1 see note below). 65-754 BYTE Doppler velocity data (coded: for doppler velocity resolution of 0.5 M/S, [((Value-2)/2.)-63.5 = M/S]; for doppler resolution of 1.0 M/S, [(Value-2)-127.] = M/S], for Value of 0 or 1 see note below), (0 - 92 gates). Starting data location depends on length of the reflectivity field, stop location depends on length of the velocity field. Velocity data is range unambiguous out to 230 KM. 65-1214 BYTE Doppler spectrum width (coded: [((Value - 2)/2.)-63.5 = M/S], for Value of 0 or 1 see note below), (0 - 920 gates). Starting data location depends on length of the reflectivity and velocity fields, stop location depends on length of the spectrum width field. Spectrum width is range unambiguous out to 230 KM. Four bytes of trailer characters referred to the Frame Check Sequence (FCS) follow the data. In cases where the three moments are not all present or the number of gates for each moment have been reduced, the record is padded out to a constant size of 1216 halfwords (2432 bytes) following the trailer characters. Note: Any base data value of 0 is data below Signal to Noise Ratio(SNR) thresholds set for that specific base data. Any base data value of 1 is data considered range ambiguous (i.e., overlaid). 13.0 NCDC Tape Contents Summaries Each new inventory line indicates one of the following occurrances: (1) a change in the VCP mode, (2) a time gap of more than 15 minutes between volume scans, (3) thirty (30) volume scans without a VCP mode change or time gap. WHEN CALLING NCDC WITH QUESTIONS CONCERNING THIS ORDER, PLEASE REFERENCE THE "ORDER-NO AND JOB-ID" 13.1 Order #11030 Job #1103001 Tape #1 Volume Coverage Patterns (VCP): 11 = Precip Mode, 5 Mins/File, 14.1 MBytes/File 21 = Precip Mode, 6 Mins/File, 9.8 MBytes/File 31 = Clear Air Mode, 10 Mins/File, 7.1 MBytes/File 32 = Clear Air Mode, 10 Mins/File, 6.1 MBytes/File TAPE VOLUME 1 Mode: 8500 ( KUDX RAPID CITY, SD ) File 1 Tape Header File 1 Block, 31616 Bytes Header Record: ARCHIVE2KUDXR05292 16JUL1999 22:27:29 NCDC 940478500 VOL01 File(s) VCP Period Of Record Bytes 2 - 30 21 04/04/1999 20:12 - 04/04/1999 23:01 286697016 31 - 60 21 04/04/1999 23:02 - 04/05/1999 02:09 296583120 61 - 90 21 04/05/1999 02:10 - 04/05/1999 05:05 296585552 91 - 120 21 04/05/1999 05:05 - 04/05/1999 08:00 296583120 121 - 150 21 04/05/1999 08:00 - 04/05/1999 10:50 286208208 151 - 180 21 04/05/1999 10:50 - 04/05/1999 13:46 296585552 181 - 210 21 04/05/1999 13:46 - 04/05/1999 16:42 296583120 211 - 240 21 04/05/1999 16:42 - 04/05/1999 19:37 296583120 241 - 270 21 04/05/1999 19:38 - 04/05/1999 22:33 296583120 271 - 300 21 04/05/1999 22:33 - 04/06/1999 01:29 296583120 301 - 324 21 04/06/1999 01:29 - 04/06/1999 03:49 237266496 325 - 354 32 04/06/1999 03:49 - 04/06/1999 08:45 190085840 355 - 384 32 04/06/1999 08:46 - 04/06/1999 13:40 190136912 385 - 414 32 04/06/1999 13:41 - 04/06/1999 18:37 190129616 415 - 444 32 04/06/1999 18:37 - 04/06/1999 23:31 190110160 445 - 474 32 04/06/1999 23:32 - 04/07/1999 04:27 190093136 475 - 504 32 04/07/l999 04:27 - 04/07/1999 09:15 184837584 505 - 525 32 04/07/1999 09:15 - 04/07/1999 12:41 133052792 13.2 Order #11030 Job #1103001 Tape #2 TAPE VOLUME 2 Mode: 8500 ( KUDX RAPID CITY, SD ) File 1 = Tape Header File 1 Block, 31616 Bytes Header Record: ARCHIVE2KUDXR05292 17JUL1999 07:22:22 NCDC 940478500 VOL02 File(s) VCP Period Of Record Bytes 2 - 18 32 04/07/1999 12:41 - 04/07/1999 15:28 107725848 19 - 48 32 04/07/1999 15:46 - 04/07/1999 20:42 190139344 49 - 78 32 04/07/1999 20:42 - 04/08/1999 01:48 190132048 79 - 108 32 04/08/1999 01:48 - 04/08/1999 06:43 190141776 109 - 122 32 04/08/1999 06:43 - 04/08/1999 08:56 85446224 123 - 152 21 04/08/1999 08:57 - 04/08/1999 11:52 296612304 153 - 167 21 04/08/1999 11:52 - 04/08/1999 13:20 148308584 168 - 197 11 04/08/1999 13:20 - 04/08/1999 15:49 429783760 198 - 227 11 04/08/1999 15:49 - 04/08/1999 18:20 429798352 228 - 232 11 04/08/1999 18:20 - 04/08/1999 18:45 71637112 233 - 252 32 04/09/1999 12:19 - 04/09/1999 15:37 126727136 253 - 255 32 04/09/1999 17:12 - 04/09/1999 17:41 19011016 256 - 285 11 04/09/1999 17:41 - 04/09/1999 20:11 431858256 286 - 315 11 04/09/1999 20:11 - 04/09/1999 22:40 432332496 316 - 345 11 04/09/1999 22:41 - 04/10/1999 01:11 431330512 346 - 375 11 04/10/1999 01:11 - 04/10/1999 03:41 429808080 376 - 405 11 04/10/1999 03:41 - 04/10/1999 06:11 429812944 406 - 407 11 04/10/1999 06:11 - 04/10/1999 06:21 28653872 13.3 Order #11030 Job #1103001 Tape #3 TAPE VOLUME 3 Mode: 8500 ( KUDX RAPID CITY, SD ) File 1 = Tape Header File 1 Block, 31616 Bytes Header Record: ARCHIVE2KUDXR05292 17JUL1999 10:57:54 NCDC 940478500 VOL File(s) VCP Period Of Record Bytes 2 - 30 11 04/10/1999 06:21 - 04/10/1999 08:56 415488440 31 - 60 11 04/10/1999 08:56 - 04/10/1999 11:26 429822672 61 - 90 11 04/10/1999 11:26 - 04/10/1999 13:56 429837264 91 - 120 11 04/10/1999 13:56 - 04/10/1999 16:26 429774032 121 - 150 11 04/10/1999 16:26 - 04/10/1999 18:56 429776464 151 - 180 11 04/10/1999 18:56 - 04/10/1999 21:26 429771600 181 - 208 11 04/10/1999 21:26 - 04/11/1999 00:00 401139616 13.4 Order #11030 Job #1103002 Tape #1 Volume Coverage Patterns (VCP): 11 = Precip Mode, 5 Mins/File, 14.1 MBytes/File 21 = Precip Mode, 6 Mins/File, 9.8 MBytes/File 31 = Clear Air Mode, 10 Mins/File, 7.1 MBytes/File 32 = Clear Air Mode, 10 Mins/File, 6.1 MBytes/File TAPE VOLUME 1 Mode: 8500 ( KUDX - RAPID CITY, SD ) File I = Tape Header File 1 Block, 31616 Bytes Header Record: ARCHIVE2KUDXR05292 17JUL1999 12:57:21 NCDC 940478500 VOL01 File(s) vcp Period Of Record Bytes 2 - 30 11 04/10/1999 23:50 - 04/11/1999 02:16 415464120 31 - 60 11 04/11/1999 02:16 - 04/11/1999 04:46 429834832 61 - 77 11 04/11/1999 04:46 - 04/11/1999 06:09 236750744 78 - 107 32 04/11/1999 06:09 - 04/11/1999 11:05 190093136 108 - 137 32 04/11/1999 11:05 - 04/11/1999 16:00 190085840 138 - 167 32 04/11/1999 16:00 - 04/11/1999 20:56 190090704 168 - 197 32 04/11/1999 20:56 - 04/12/1999 02:02 190088272 198 - 227 32 04/12/1999 02:02 - 04/12/1999 06:57 190076112 228 - 257 32 04/12/1999 06:57 - 04/12/1999 11:53 190080976 258 - 287 32 04/12/1999 11:53 - 04/12/1999 16:49 190088272 288 - 317 32 04/12/1999 16:49 - 04/12/1999 21:44 190080976 318 - 334 32 04/12/1999 21:44 - 04/13/1999 00:32 107725848 335 - 364 32 04/13/1999 01:58 - 04/13/1999 06:53 190083408 365 - 370 32 04/13/1999 06:53 - 04/13/1999 07:52 38019600 371 - 387 21 04/13/1999 07:52 - 04/13/1999 09:30 165084568 388 - 417 32 04/13/1999 09:30 - 04/13/1999 14:26 190078544 418 - 447 32 04/13/1999 14:26 - 04/13/1999 19:22 190053136 448 - 476 32 04/13/1999 19:22 - 04/14/1999 00:08 183760184 477 - 506 21 04/14/1999 00:08 - 04/14/1999 03:04 296587984 507 - 536 21 04/14/1999 03:04 - 04/14/1999 05:59 296585552 537 - 555 21 04/14/1999 05:59 - 04/14/1999 07:50 187828680 13.5 Order #11030 Job #1103002 Tape #2 TAPE VOLUME 2 Mode: 8500 KUDX - RAPID CITY, SD File 1 = Tape Header File 1 Block, 31616 Bytes Header Record: ARCHIVE2KUDXR05292 17JUL1999 21:12:40 NCDC 940478500 VOL02 File(s) VCP Period Of Record Bytes 2 - 30 21 04/14/1999 07:50 - 04/14/1999 10:40 286677560 31 - 60 21 04/14/1999 10:40 - 04/14/1995 13:36 296614736 61 - 71 21 04/14/1999 13:36 - 04/14/1999 14:40 108759304 72 - 101 21 04/14/1999 15:34 - 04/14/1999 18:34 296622032 102 - 108 21 04/14/1999 18:34 - 04/14/1999 19:13 65773608 109 - 138 32 04/14/1999 19:13 - 04/15/1999 00:08 190083408 139 - 168 32 04/15/1999 00:10 - 04/15/1999 05:05 190078544 169 - 198 32 04/15/1999 05:05 - 04/15/1999 10:02 186892624 199 - 228 32 04/15/1999 10:02 - 04/15/1999 15:06 190134480 229 - 258 32 04/15/1999 15:06 - 04/15/1999 20:03 190146640 259 - 288 32 04/15/1999 20:03 - 04/16/1999 00:56 188398032 289 - 318 32 04/16/1999 00:56 - 04/16/1999 05:52 190083408 319 - 348 32 04/16/1999 05:52 - 04/16/1999 10:48 190078544 349 - 378 32 04/16/1999 10:48 - 04/16/1999 15:43 190085840 379 - 408 32 04/16/1999 15:43 - 04/16/1999 20:40 190090704 409 - 438 32 04/16/1999 20:40 - 04/17/1999 01:36 190093136 439 - 468 32 04/17/1999 01:36 - 04/17/1999 06:31 190085840 469 - 498 32 04/17/1999 06:32 - 04/17/1999 11:28 190090704 499 - 528 32 04/17/1999 11:28 - 04/17/1999 16:24 190083408 529 - 558 32 04/17/1999 16:24 - 04/17/1999 21:19 190085840 559 - 575 32 04/17/1999 21:20 - 04/18/1999 00:07 107713688 13.6 Order #11030 Job #1103003 Tape #1 Volume Coverage Patterns (VCP): 11 = Precip Mode, 5 Mins/File, 14.1 MBytes/File 21 = Precip Mode, 6 Mins/File, 9.8 MBytes/File 31 = Cleat Air Mode, 10 Mins/File, 7.1 MBytes/File 32 = Clear Air Mode, 10 Mins/File, 6.1 MBytes/File TAPE VOLUME 1 Mode: 8500 KUDX RAPID CITY, SD File 1 = Tape Header File 1 Block, 31616 Bytes Header Record: ARCHIVE2KTJDXR05 279 16JUL1999 22:28:05 NCDC 940478500 VOL01 File(s) VCP Period Of Record Bytes 2 - 30 32 04/17/1999 23:47 - 04/18/1999 04:34 183755320 31 - 60 32 04/18/1999 04:34 - 04/18/1999 09:30 190080976 61 - 90 32 04/18/1999 09:30 - 04/18/1999 14:25 190093136 91 - 120 32 04/18/1999 14:25 - 04/18/1999 19:21 190088272 121 - 140 32 04/18/1999 19:22 - 04/18/1999 22:34 124073824 141 - 142 32 04/19/1999 00:19 - 04/19/1999 00:25 2940336 143 - 148 32 04/19/1999 20:26 - 04/19/1999 21:25 38019600 149 - 178 21 04/19/1999 21:25 - 04/20/1999 00:20 296590416 179 - 208 21 04/20/1999 00:21 - 04/20/1999 03:16 296585552 209 - 238 21 04/20/1999 03:16 - 04/20/1999 06:12 296583120 239 - 268 21 04/20/1999 06:12 - 04/20/1999 09:07 296583120 269 - 298 21 04/20/1999 09:07 - 04/20/1999 12:03 296592848 299 - 328 21 04/20/1999 12:04 - 04/20/1999 14:59 296592848 329 - 358 21 04/20/1999 14:59 - 04/20/1999 17:52 293577168 359 - 384 21 04/20/1999 17:53 - 04/20/1999 20:19 238745200 385 - 414 11 04/20/1999 20:20 - 04/20/1999 22:49 429737552 415 - 444 11 04/20/1999 22:49 - 04/21/1999 01:19 429696208 445 - 470 11 04/21/1999 01:19 - 04/21/1999 03:30 372410352 13.7 Order #11030 Job #1103003 Tape #2 TAPE VOLUME 2 Mode: 8500 KUDX - RAPID CITY, SD File 1 = Tape Header File 1 Block, 31616 Bytes Header Record: ARCHIVE2KUDXR05279 17JUL1999 07:25:45 NCDC 940478500 VOL02 File(s) VCP Period Of Record Bytes 2 - 20 11 04/21/1999 03:30 - 04/21/1999 05:05 272138824 21 - 50 21 04/21/1999 05:05 - 04/21/1999 08:00 296583120 51 - 80 21 04/21/1999 08:00 - 04/21/1999 11:08 296583120 81 - 110 21 04/21/1999 11:08 - 04/21/1999 14:03 296583120 111 - 140 21 04/21/1999 14:03 - 04/21/1999 16:58 296595280 141 - 170 21 04/21/1999 16:58 - 04/21/1999 19:54 296585552 171 - 200 21 04/21/1999 19:54 - 04/21/1999 22:48 294715344 201 - 221 21 04/21/1999 22:48 - 04/22/1999 00:48 203259768 222 - 251 21 04/22/1999 12:46 - 04/22/1999 15:41 296626896 252 - 281 21 04/22/1999 15:41 - 04/22/1999 18:37 296641488 282 - 311 21 04/22/1999 18:37 - 04/22/1999 21:32 296636624 312 - 341 21 04/22/1999 21:32 - 04/23/1999 00:28 296624464 342 - 365 21 04/23/1999 00:28 - 04/23/1999 02:49 237293248 366 - 395 32 04/23/1999 02:49 - 04/23/1999 07:44 190085840 396 - 425 32 04/23/1999 07:44 - 04/23/1999 12:41 190090704 426 - 455 32 04/23/1999 12:41 - 04/23/1999 17:37 190085840 456 - 485 32 04/23/1999 17:37 - 04/23/1999 22:33 190085840 486 - 488 32 04/23/1999 22:33 - 04/23/1999 23:02 19011016 13.8 Order #11030 Job #1103003 Tape #3 TAPE VOLUME 3 Mode: 8500 KUDX - RAPID CITY, SD File 1 = Tape Header File I Block, 31616 Bytes Header Record: ARCHIVE2KUDXR05279 17JUL1999 21:12:49 NCDC 940478500 VOL03 File(s) VCP Period Of Record Bytes 2 - 30 32 04/23/1999 23:02 - 04/24/1999 03:49 183760184 31 - 60 32 04/24/1999 03:49 - 04/24/1999 08:45 190127184 61 - 90 32 04/24/1999 08:45 - 04/24/1999 13:41 190090704 91 - 120 32 04/24/1999 13:41 - 04/24/1999 18:37 190083408 121 - 150 32 04/24/1999 18:37 - 04/24/1999 23:32 190083408 151 - 153 32 04/24/1999 23:32 - 04/25/1999 00:01 19008584 13.9 Order #11030 Job #1103004 Tape #1 Volume Coverage Patterns (VCP): 11 = Precip Mode, 5 Mins/File, 14.1 MBytes/File 21 = Precip Mode, 6 Mins/File, 9.8 MBytes/File 31 = Clear Air Mode, 10 Mins/File, 7.1 MBytes /File 32 = Clear Air Mode, 10 Mins/File, 6.1 MBytes /File TAPE VOLUME 1 Mode: 8500 KUDX RAPID CITY, SD File 1 = Tape Header File 1 Block, 31616 Bytes Header Record: ARCHIVE2KUDXR05379 16JUL1999 22:28:44 NCDC 940478500 VOL01 File(s) VCP Period Of Record Bytes 2 - 27 32 04/24/1999 23:52 - 04/25/1999 04:08 163773936 28 - 57 21 04/25/1999 04:08 - 04/25/1999 07:03 296587984 58 - 87 21 04/25/1999 07:03 - 04/25/1999 09:59 296583120 88 - 117 21 04/25/1999 09:59 - 04/25/1999 12:54 296583120 118 - 147 21 04/25/1999 12:55 - 04/25/1999 15:55 296583120 148 - 177 21 04/25/1999 15:56 - 04/25/1999 18:52 296583120 178 - 207 21 04/25/1999 18-52 - 04/25/1999 21:47 296583120 208 - 237 21 04/25/1999 21:47 - 04/26/1999 00:43 296583120 238 - 267 21 04/26/1999 00:43 - 04/26/1999 03:38 296583120 268 - 297 21 04/26/1999 03:38 - 04/26/1999 06:33 296583120 298 - 327 21 04/26/1999 06:34 - 04/26/1999 09:30 296583120 328 - 344 21 04/26/1999 09:30 - 04/26/1999 11:09 168063768 345 - 374 32 04/26/1999 11:09 - 04/26/1999 16:04 190088272 375 - 382 32 04/26/1999 16:04 - 04/26/1999 17:16 45344832 383 - 412 21 04/26/1999 17:16 - 04/26/1999 20:11 296622032 413 - 442 21 04/26/1999 20:11 - 04/26/1999 23:06 296609872 443 - 472 21 04/26/1999 23:06 - 04/27/1999 02:02 296585552 473 - 475 21 04/27/1999 02:03 - 04/27/1999 02:20 29660744 13.10 Order #11030 Job #1103004 Tape #2 TAPE VOLUME 2 Mode: 8500 KUDX - RAPID CITY, SD File 1 = Tape Header File 1 Block, 31616 Bytes Header Record: ARCHIVE2KUDXR05379 17JUL1999 Q7:25:49 NCDC 940478500 VOL02 File(s) VCP Period Of Record Bytes 2 - 30 21 04/27/1999 02:20 - 04/27/1999 05:09 286706744 31 - 60 21 04/27/1999 05:09 - 04/27/1999 08:04 296590416 61 - 90 21 04/27/1999 08:04 - 04/27/1999 11:01 296602576 91 - 120 21 04/27/1999 11:01 - 04/27/1999 14:02 296605008 121 - 150 21 04/27/1999 14:02 - 04/27/1999 16:58 296605008 151 - 180 21 04/27/1999 16:58 - 04/27/1999 19:53 296605008 181 - 210 21 04/27/1999 19:53 - 04/27/1999 22:48 296597712 211 - 240 21 04/27/1999 22:48 - 04/28/1999 01:45 296587984 241 - 270 21 04/28/1999 01:45 - 04/28/1999 04:40 296573392 271 - 300 21 04/28/1999 04:40 - 04/28/1999 07:38 294085456 301 - 330 21 04/28/1999 07:38 - 04/28/1999 10:35 296583120 331 - 360 21 04/28/1999 10:35 - 04/28/1999 13:30 296583120 361 - 390 21 04/28/1999 13:30 - 04/28/1999 16:26 296597712 391 - 420 21 04/28/1999 16:26 - 04/28/1999 19:21 296583120 421 - 450 21 04/28/1999 19:21 - 04/28/1999 22:16 296585552 451 - 452 21 04/28/1999 22:17 - 04/28/1999 22:28 19772208 13.11 Order #11030 Job #1103004 Tape #3 TAPE VOLUME 3 Mode: 8500 KUDX - RAPID CITY, SD File 1 = Tape Header File 1 Block, 31616 Bytes Header Record:.ARCHIVE2KUDXR05379 17JUL1999 10:57:58 NCDC-940478500 VOL03 File(s) VCP Period Of Record Bytes 2 - 30 21 04/28/1999 22:28 - 04/29/1999 01:19 286699448 31 - 60 21 04/29/1999 01:19 - 04/29/1999 04:14 296583120 61 - 90 21 04/29/1999 04:14 - 04/29/1999 07:15 296583120 91 - 120 21 04/29/1999 07:15 - 04/29/1999 10:11 296583120 121 - 150 21 04/29/1999 10:11 - 04/29/1999 13:06 296583120 151 - 180 21 04/29/1999 13:06 - 04/29/1999 16:01 296583120 181 - 210 21 04/29/1999 16:02 - 04/29/1999 18:58 296587984 211 - 240 21 04/29/1999 18:58 - 04/29/1999 21:53 296590416 241 - 270 21 04/29/1999 21:53 - 04/30/1999 00:49 296587984 271 - 300 21 04/30/1999 00:49 - 04/30/1999 03:44 29G583120 301 - 330 21 04/30/1999 03:44 - 04/30/1999 06:39 296330192 331 - 360 21 04/30/1999 06:40 - 04/30/1999 09:36 296269392 361 - 390 21 04/30/1999 09:36 - 04/30/1999 12:31 296641488 391 - 420 21 04/30/1999 12:31 - 04/30/1999 15:26 296583120 421 - 450 21 04/30/1999 15:26 - 04/30/1999 18:23 296587984 451 - 452 21 04/30/1999 18:23 - 04/30/1999 18:34 19772208 13.12 Order #11030 Job #1103004 Tape #4 TAPE VOLUME 4 Mode: 8500 KUDX - RAPID CITY., SD File 1 = Tape Header File 1 Block, 31616 Bytes Header Record: ARCHIVE2KUDXR05379 17JUL1999 13:58:51 NCDC 940478500 VOLO4 File(s) VCP Period Of Record Bytes 2 - 30 21 04/30/1999 18:35 - 04/30/1999 21:24 286697016 31 - 56 21 04/30/1999 21:24 - 05/01/1999 00:02 257043568 13.13 Order #11030 Job #1103005 Tape #1 Volume Coverage Patterns (VCP): 11 = Precip Mode, 5 Mins/File, 14.1 MBytes/File 21 = Precip Mode, 6 Mins/File, 9.8 MBytes/File 31 = Clear Air Mode, 10 Mins/File, 7.1 MBytes/File 32 = Clear Air Mode, 10 Mins/File, 6.1 MBytes/File TAPE VOLUME # 1 Mode: 8500 KUDX RAPID CITY, SD File 1 = Tape Header File 1 Block, 31616 Bytes Header Record: ARCHIVE2KUDXR05379 17JUL1999 22:17:27 NCDC 940478500 VOL01 File(s) VCP Period Of Record Bytes 2 - 11 21 04/30/1999 23:50 - 05/01/1999 00:50 98885360 12 - 41 21 05/01/1999 14:23 - 05/01/1999 17:18 296583120 42 - 63 21 05/01/1999 17:18 - 05/01/1999 19:28 217494288 64 - 64 32 05/01/1999 19:28 - 05/01/1999 19:29 989848 65 - 67 21 05/01/1999 19:29 - 05/01/1999 19:47 29668040 68 - 68 32 05/01/1999 19:47 - 05/01/1999 19:48 1004440 69 - 96 21 05/01/1999 19:48 - 05/01/1999 22:32 276837664 97 - 126 21 05/02/1999 02:41 - 05/02/1999 05:36 296585552 127 - 156 21 05/02/1999 05:36 - 05/02/1999 08:31 296583120 157 - 186 21 05/02/1999 08:31 - 05/02/1999 11:27 296583120 187 - 216 21 05/02/1999 11:28 - 05/02/1999 14:23 296587984 217 - 246 21 05/02/1999 14:23 - 05/02/1999 17:18 296583120 247 - 276 21 05/02/1999 17:18 - 05/02/1999 20:14 296583120 277 - 306 21 05/02/1999 20:14 - 05/02/1999 23:09 296583120 307 - 336 21 05/02/1999 23:09 - 05/03/1999 02:05 296583120 337 - 366 21 05/03/1999 02:05 - 05/03/1999 05:00 296583120 367 - 396 21 05/03/1999 05:01 - 05/03/1999 07:56 296583120 397 - 426 21 05/03/1999 07:56 - 05/03/1999 10:58 296583120 427 - 454 21 05/03/1999 10:58 05/03/1999 13:41 276813344 13.14 Order #11030 Job #1103005 Tape #2 TAPE VOLUME 2 Mode: 8500 KUDX - RAPID CITY, SD File 1 = Tape Header File 1 Block, 31616 Bytes Header Record: ARCHIVE2KUDXR05379 18JUL1999 10:52:49 NCDC 940478500 VOL02 File(s) VCP Period Of Record Bytes 2 - 2 32 05/03/1999 13:41 - 05/03/1999 13:42 994712 3 - 12 21 05/03/1999 13:43 - 05/03/1999 14:47 98870768 13 - 36 21 05/03/1999 17:41 - 05/03/1999 20:01 237273792 37 - 66 11 05/03/1999 20:02 - 05/03/1999 22:31 429742416 67 - 96 ll 05/03/1999 22:31 - 05/04/1999 01:02 429698640 97 - 126 11 05/04/1999 01:02 - 05/04/1999 03:31 429696208 127 - 156 11 05/04/1999 03:32 - 05/04/1999 06:01 429679184 157 - 186 11 05/04/1999 06:01 - 05/04/1999 08:31 429703504 187 - 216 11 05/04/1999 08:31 - 05/04/1999 11:01 429754576 217 - 246 11 05/04/1999 11:02 - 05/04/1999 13:31 430686032 247 - 254 11 05/04/1999 13:31 - 05/04/1999 14:11 114615488 255 - 284 21 05/04/1999 14:11 - 05/04/1999 17:07 296587984 285 - 314 21 05/04/1999 17:07 - 05/04/1999 20:08 296583120 315 - 344 21 05/04/1999 20:08 - 05/04/1999 23:04 296583120 345 - 356 21 05/04/1999 23:04 - 05/05/1999 00:15 118633248 13.15 Order #11030 Job #1103005 Tape #3 TAPE VOLUME 3 Mode: 8500 KUDX - RAPID CITY, SD File 1 = Tape Header File 1 Block, 31616 Bytes Header Record: ARCHIVE2KUDXR05379 18JUL1999 14:28:51 NCDC 940478500 VOL03 File(s) VCP Period Of Record Bytes 2 - 30 21 05/05/1999 00:15 - 05/05/1999 03:04 286699448 31 - 60 21 05/05/1999 03:04 - 05/05/1999 05:59 296583120 61 - 84 21 05/05/1999 06:00 - 05/05/1999 08:18 232013376 85 - 114 32 05/05/1999 08:18 - 05/05/1999 13:13 190080976 115 - 144 32 05/05/1999 13:13 - 05/05/1999 18:09 190088272 145 - 174 32 05/05/1999 18:10 - 05/05/1999 23:04 190098000 175 - 194 32 05/05/1999 23:05 - 05/06/1999 02:14 121391328 195 - 224 21 05/06/1999 02:14 - 05/06/1999 05:09 296626896 225 - 254 21 05/06/1999 05:09 - 05/06/1999 08:04 296614736 255 - 284 21 05/06/1999 08:04 - 05/06/1999 11:01 296609872 285 - 314 21 05/06/1999 11:01 - 05/06/1999 13:56 296607440 315 - 344 21 05/06/1999 13:56 - 05/06/1999 16:52 296624464 345 - 374 21 05/06/1999 16:52 - 05/06/1999 19:47 296617168 375 - 404 21 05/06/1999 19:47 - 05/06/1999 22:42 296607440 405 - 406 21 05/06/1999 22:42 - 05/06/1999 22:54 19769776