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Table AT1. Example of corrections to natural gamma radiation (NGR) count data. (See table note.)

Depth in section (cm)
NGR (counts/s)
Median
Standard error
Correction
0 26.6 0.3 –3.2
10 27.8 0.3 –2.1
20 30.0 0.4 0.1
30 30.3 0.4 0.4
40 30.7 0.4 0.8
50 30.6 0.4 0.8
60 30.4 0.4 0.5
70 30.9 0.4 1.0
80 29.6 0.4 –0.3
90 29.7 0.4 –0.2
100 31.2 0.4 1.3
110 31.0 0.4 1.1
120 29.4 0.4 –0.4
130 28.9 0.4 –0.9
140 27.9 0.5 –2.0
150* 22.1 3.3 –7.8

Note: * = the large apparent correction and the large standard error at 150 cm may be artifacts of core section length, with the sensor sometimes recording no sediment.

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