condition mean min max 4 h after light 49.063236 45.998299 52.128173 8 h after light 38.9502775 36.885522 41.015033 12 h after light 39.2261565 38.807955 39.644358 4 h after dark 32.39991 27.914298 36.885522 8 h after dark 41.0099965 34.954608 47.065385 12 h after dark 34.589012 34.589012 34.589012