condition mean min max 0 h after light 19.20505 18.295 20.1151 4 h after light 23.722 22.094 25.35 8 h after light 22.4045 21.9083 22.9007 4 h after dark 29.65375 26.9473 32.3602 8 h after dark 27.13515 26.9 27.3703 12 h after dark 20.76275 19.0308 22.4947