condition mean min max 0 h after light 13.549949999999999 13.2528 13.8471 4 h after light 16.22545 13.8727 18.5782 8 h after light 22.93745 19.2333 26.6416 4 h after dark 30.4081 28.5482 32.268 8 h after dark 21.470750000000002 21.1551 21.7864 12 h after dark 16.7461 12.4512 21.041