condition mean min max 3 h after light 9.931423333333333 9.25171 10.8452 6 h after light 13.459933333333334 10.628 16.2311 9 h after light 13.813733333333333 12.9735 14.8113 12 h after light 15.62665 12.8712 17.3871 3 h after dark 20.4569 19.3897 21.8044 6 h after dark 14.7811 13.9261 15.2709 9 h after dark 10.3306 8.45465 13.2374 12 h after dark 9.14979 8.92223 9.37735