condition mean min max 4 h after light 63.79325 62.8691 64.7174 8 h after light 50.73525 49.0662 52.4043 12 h after light 36.8748 36.3225 37.4271 4 h after dark 55.26445 50.7918 59.7371 8 h after dark 61.0047 60.7447 61.2647 12 h after dark 60.750150000000005 59.0596 62.4407