condition mean min max 0 h after light 44.3617 43.9396 44.7838 4 h after light 16.55075 15.2968 17.8047 8 h after light 14.3062 12.6729 15.9395 4 h after dark 23.3091 19.2995 27.3187 8 h after dark 31.8147 30.1723 33.4571 12 h after dark 34.8918 30.0473 39.7363