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Table T5. Acronyms and units used for downhole wireline tools and measurements, Expedition 340.

Tool Output Description Unit
EDTC   Enhanced Digital Telemetry Cartridge  
GR Total gamma ray gAPI
ECGR Environmentally corrected gamma ray gAPI
EHGR High-resolution environmentally corrected gamma ray gAPI
HNGS   Hostile Environment Gamma Ray Sonde  
HSGR Standard (total) gamma ray gAPI
HCGR Computed gamma ray (HSGR minus uranium contribution) gAPI
HFK Potassium wt%
HTHO Thorium ppm
HURA Uranium ppm
HLDS   Hostile Environment Litho-Density Sonde  
RHOM Bulk density g/cm3
PEFL Photoelectric effect barn/e
LCAL Caliper (measure of borehole diameter) Inch
DRH Bulk density correction g/cm3
HRLA   High-Resolution Laterolog Array Tool  
RLAXXX Apparent resistivity from computed focusing mode XXX Ωm
RT True resistivity Ωm
MRES Borehole fluid resistivity Ωm
MSS   Magnetic Susceptibility Sonde  
LSUS Magnetic susceptibility, deep reading Uncalibrated units
FMS   Formation MicroScanner  
C1, C2 Orthogonal hole diameters Inch
P1AZ Pad 1 azimuth Degrees
  Spatially oriented resistivity images of borehole wall  
GPIT   General Purpose Inclinometry Tool  
DEVI Hole deviation Degrees
HAZI Hole azimuth Degrees
Fx, Fy, Fz Earth’s magnetic field (three orthogonal components) Degrees
Ax, Ay, Az Acceleration (three orthogonal components) m/s2
DSI   Dipole Shear Sonic Imager  
DTCO Compressional wave slowness µs/ft
DTSM Shear wave slowness µs/ft
DT1 Shear wave slowness, lower dipole µs/ft
DT2 Shear wave slowness, upper dipole µs/ft
VSI   Versatile Seismic Imager  
1WTT Acoustic traveltime s

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