condition mean min max 0 h after light 8.144105 6.65526 9.63295 2 h after light 6.068575 5.67763 6.45952 4 h after light 6.23869 5.10996 7.36742 8 h after light 6.000185 4.42572 7.57465 12 h after light 9.936335 9.45967 10.413 2 h after dark 10.551935 9.51017 11.5937 4 h after dark 8.55253 7.49194 9.61312 8 h after dark 11.1362 10.2339 12.0385 12 h after dark 9.210335 8.32227 10.0984