condition mean min max 4 h after light 497.6 497.6 497.6 8 h after light 590.3 489.3 691.3 12 h after light 695.4000000000001 598.6 792.2 4 h after dark 840.8 761.8 919.8 8 h after dark 1014.7 1012.2 1017.2 12 h after dark 910.85 829.0 992.7