condition mean min max 4 h after light 41.954486 38.514988 45.393984 8 h after light 46.4547845 38.546088 54.363481 12 h after light 29.5099095 18.268049 40.75177 4 h after dark 36.972696 34.778341 39.167051 8 h after dark 31.880642 29.31407 34.447214 12 h after dark 22.813092 22.813092 22.813092