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< PART – B Software >
B-95
IM 39J06B40-01EN 14th Edition: May 30, 2022
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LAS File Format
The figure below shows a sample LAS file. Any text following a pound (#) character or a
colon (:) character on a line is comment text.
Message Description
Version info section Information about the LAS format version.
Data info 1 section
START, STOP and STEP indicating the start position, end position and interval
between data in the depth direction. STEP indicates the depth interval between
measured data if the interval is constant and indicates 0 if the interval is variable.
A constant value is output for NULL.
Well info section
Specified and selected settings.
DATE indicates the measurement start date and time.
Data info 2 section Column headings and units of output data.
Data section
Depth, temperature, Stokes intensity, anti-Stokes intensity data and CFL
(calculated fiber loss) of measured data.
Ending line Comment text representing the ending line of the file.