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. 2012 Nov 21;7(11):e50468. doi: 10.1371/journal.pone.0050468

Table 2. Statistical data for radioactivity concentrations of 238U, 232Th and 40K (Bq kg−1) in the beach sand samples from the Chavara –Neendakara Placer deposits (HBRA).

238U 232Th 40K
Range 1839–41280 213–6022 222–2531
Arithmetic Mean(AM) 2355 14000 1116
Standard Deviation(SD) 1726 11025 689
Median 1854 10037 1116
Kurtosis 0.9 1.2 0.3