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. Author manuscript; available in PMC: 2017 Aug 8.
Published in final edited form as: Icarus. 2015 Jul 15;255:100–115. doi: 10.1016/j.icarus.2015.04.004

Table 2.

Collimated epithermal neutron detector (CSETN) signal binned in local time.

Local time (24 h) CSETN (cps) Integrated time (s) [H] (ppmw) WEH (wt%)
0:35   2.108 ± 0.005   4.55 × 106 11.1 ± 5.8   0.0100 ± 0.0052
2:35   2.098 ± 0.005   3.12 × 106 21.3 ± 5.8   0.0191 ± 0.0052
4:35   2.102 ± 0.005   3.26 × 106 17.2 ± 5.8   0.0155 ± 0.0052
6:35   2.086 ± 0.005   2.78 × 106 33.6 ± 5.9   0.0302 ± 0.0053 Apollo
8:35   2.101 ± 0.005   3.56 × 106 18.2 ± 5.8   0.0164 ± 0.0052 Apollo
10:35   2.106 ± 0.004   5.13 × 106 13.1 ± 4.9   0.0118 ± 0.0044
12:35   2.118 ± 0.005   4.45 × 106   1.0 ± 5.7   0.0009 ± 0.0052
14:35   2.121 ± 0.004   2.90 × 106 −2.0 ± 4.9 −0.0018 ± 0.0044
16:35   2.116 ± 0.006   3.00 × 106   3.0 ± 6.6   0.0027 ± 0.0060
18:35   2.114 ± 0.005   2.83 × 106   5.0 ± 5.7   0.0045 ± 0.0052
20:35   2.110 ± 0.005   4.06 × 106   9.1 ± 5.8   0.0082 ± 0.0052
22:35   2.109 ± 0.004   5.32 × 106 10.1 ± 4.9   0.0091 ± 0.0044
Mean 2.1078 ± 0.0014 44.97 × 106 11.3 ± 1.6   0.0102 ± 0.0014

Local time = midpoint of two-hour interval of local time on Moon.

“Apollo” indicates the local time intervals when Apollo astronauts were on the ground and collected samples.

Reference count rate = 2.119 ± 0.003 cps, uncertainty-weighted mean of maximum three two-hour intervals.