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Table 3 Average hourly UVB intensity in September 2016 – March 2017

From: Optimizing ultraviolet B radiation exposure to prevent vitamin D deficiency among pregnant women in the tropical zone: report from cohort study on vitamin D status and its impact during pregnancy in Indonesia

Time (hour) Average hourly UVB intensity (watt/m2)
September October November December January February March
00.00 – 06.00 0 0 0 0 0 0 0
06.00 – 07.00 0.2 0.9 1.2 0.7 0.01 0.47 3.37
07.00 – 08.00 4.9 4 2.7 3.7 0.18 2.99 6.35
08.00 – 09.00 5.7 5.7 4.1 5.2 0.3 3.85 7.79
09.00 – 10.00 7.8 8.2 6.5 7.5 0.47 6.95 10.4
10.00 – 11.00 9.9 11 9 9.7 0.63 9.65 12.6
11.00 – 12.00 9.7 12 8.6 12 0.67 11.9 13.5
12.00 – 13.00 9.7 10 8.9 13 0.63 12.7 13.3
13.00 – 14.00 8 9.4 8 12 0.54 11 11.2
14.00 – 15.00 7.4 7.1 6.1 9 0.45 8.16 9.75
15.00 – 16.00 5.9 5.9 3.9 6.6 0.3 5.39 7.34
16.00 – 17.00 5.6 3.3 3.4 4.1 0.16 3.01 5.35
17.00 – 18.00 1.3 1 1.2 3.5 0.06 1.02 1.42
18.00 – 00.00 0 0 0 0 0 0 0