condition mean min max 4 h after light 169.2 169.2 169.2 8 h after light 145.95 142.4 149.5 12 h after light 148.8 135.1 162.5 4 h after dark 170.64999999999998 151.6 189.7 8 h after dark 203.1 164.6 241.6 12 h after dark 159.5 140.5 178.5