Line: Line name
Base_134_nT: Base station value
cor1_diurnal: Data with applied diurnal corrections (nT)
cor2_static: Data with applied diurnal and static corrections (nT)
cor3_tieline: Data with applied diurnal, static and tieline corrections (nT)
Date: Date (YYYY/MM/DD)
dcor_noise: Decorrugation noise extractred by Geosoft microlevelling
latitude: Latitude (dec.degrees)
Line: Line number
longitude: Longitude (dec.degrees)
Mag_ser: Serial number of mag unit
mag_TMF_nT: Data with applied diurnal, static, tieline and microlevel  corrections (nT)
offset1_diurnal: Offset of diurnal corrections (nT)
offset2_static: Offset of static corrections (nT)
offset3_tieline: Offset of tieline corrections (nT)
raw_nT: Raw collected data (nT)
sq: Signal quality codes
time: Time (HH:MM:SS.S)
UTME_NAD83: UTM Eastings (NAD83, Zone 9)
UTMN_NAD83: UTM Northings (NAD83, Zone 9)
