condition mean min max 4 h after light 780.8405 760.843 800.838 8 h after light 170.4235 156.904 183.943 12 h after light 19.69475 19.5234 19.8661 4 h after dark 6.829695 6.54525 7.11414 8 h after dark 2.50207 1.28857 3.71557 12 h after dark 26.80105 18.4523 35.1498