alongtrack
year_gmt	GMT year
day_gmt		GMT day
lat		latitude			decimal degrees
qual_mag	quality of Magellan GPS
couse_mag	course via Magellan GPS 	meters/second
lat2		latitude (Trimball)		decimal degress
qual_trim	quality of Trimball GPS
couse_trim	course via Trimball GPS 	meters/second
wind_saws	starboard apparent wind speed	meters per second
wind_sawa	starboard apparent wind azimuth	degrees
humidity	relative humidity		percent
temp_ss5	sea surface temperature		degrees
eppley_pir	Eppley PIR, long wave radiation	watts per sqaure meter
depth_sl	water depth via Edo speed log	meters
head2		heading via secondary source	degrees
depth_cs	chirp Sonar depth below		meters
yrday0_gmt	system year-day & time 		decimal number
vbs
cruiseid	Cruise identification		n/a
yrday_utc	Year and day			UTC
lon		Longitude			degrees
transducer	Transducer number		n/a
vbs