These files are ASCII output files of data collected by a sonic
anemometer located at Beaumont, KS on the 10-m tower located there as
part of the ABLE instrumentation. Data were recorded at 10 Hz so in a
30-minute file there should be 18000 data lines.  Most files have 17999
or 18000 data lines plus one header line.  Thus, some files have one
scan missing, and there are a few that are considerably shorter.  The
velocity components have been rotated into a u,v,w, coordinate system,
where positive u is a wind from the west and positive v is a wind from
the south.  No rotations to produce non-zero values of w have been
performed.  Sonic height was 7 m.

The name of each file indicates the time at which the data collection
period starts.  The first two characters in each file name are bs,
followed by the year (1999), the date (mmdd), and the starting time in
UTC (e.g. 0930 or 1700).  The suffix .rot indicates the uv velocity
components have been rotated.

The first line of each file is a header that lists the 4 quantities
that have been tabulated:  u,v,w, and T.  The header has the form:
u(cm/s) v(cm/s) w(cm/s) T(100*deg C).  The velocity components are in
units of cm/s; the temperatures are in degrees Celsius and have been
multiplied by 100.  The data were written as integers with the following
FORMAT statement in FORTRAN: FORMAT(1x,i6,i6,i6,i5).

Note on times:  The time stamp for each file was taken off the PC clock
used to log the data.  This clock tended to run slow and was
periodically reset.  Thus, the starting times for the files may be a few
seconds off.  A history of resets is given below.

Clock set at 22:36:20 UTC on 10/2/99.
Clock reset at 22:36:55 on 10/4/99.  Clock was 3 seconds slow before reset.
Clock reset at 17:33:28 on 10/5/99/  Clock was 2 seconds slow at this time.
Internal clock was speeded up using adjtimex utility.
Clock reset at 23:24:10 UTC on 10/12/99.  Clock was 4 seconds slow.
Clock reset at 21:44 UTC on 10/18/99.  Clock was 3 seconds slow.
Clock reset at 18:22 UTC on 10/28/99.  Clock was 5 seconds slow.

Thus, the maximum error in the time stamp for a file should be 5
seconds or less.