IKP data file header description:

Stimech:	time (hh:mm:ss) UTC
Slat:		latitude, decimal degrees
Slong:		longitude, decimal degrees East
SIAltm:		INS Altitude, meters
SINShead:	INS heading, degrees true
Spress:		Static pressure (mb)
SSAT:		Static air temperature (deg C)
STAT:		Total air temperature (deg C)
SRHWVSS:	Relative humidity from WVSS (percent)
STAS:		True airspeed (m/s)
Szaccg:		INS vertical acceleration (g units)
Swdir:		Wind direction (deg true)
Swspd:		Wind speed (m/s)
XKBZR5s		IKP TWC, background humidity removed, g/m3, 5 second centered average

All data the same as IKP2 Version 4 data distribution except final variable XKBZR5s (5 second) computed from previous XKBZRgm3 (1-second) and substituted

State parameter data provided from the SAFIRE data files F20_1Hz-HAIC_base_aipov_v2_*.txt.