Pretty much, there are no shortage of ways to merge such data badly.
Many devices, uncalibrated and drifting, poor time normalisation to address counts accumulating when lingering, ... ffs they probably don't even adjust for cosmic or radon ...
( TBF the last two are pretty picky objections unless you're going hardcore geophysical professional )
Many devices, uncalibrated and drifting, poor time normalisation to address counts accumulating when lingering, ... ffs they probably don't even adjust for cosmic or radon ...
( TBF the last two are pretty picky objections unless you're going hardcore geophysical professional )