condition mean min max 4 h after light 54.54215 51.1074 57.9769 8 h after light 51.18285 51.1219 51.2438 12 h after light 43.6476 42.5965 44.6987 4 h after dark 54.54145 50.7469 58.336 8 h after dark 56.49205 54.8017 58.1824 12 h after dark 62.4054 61.4019 63.4089