AH Column Headings for AH_060531.csi

Datafiles AH_data.txt and AH_data_yyyy.txt
	Data type 1: ID, Year, Day, hhmm, Battery Voltage, Temperature in box (*C), Temperature out of box (*C), IRGA  Temperature (*C), CO2_zero, CO2_span, Std_Tank, CO2_sampl, chck_tnk, CO2_chck, H2O_zero, H2O_sampl

Datafile AH_dailydata.txt
	Data type 2: ID, Year, Day, hhmm, CO2midaft, Daily Mean CO2, Daily Max CO2, Daily Min CO2