condition mean min max 4 h after light 35.4327295 16.429472 54.435987 8 h after light 36.987242 27.027353 46.947131 12 h after light 55.7695045 41.071535 70.467474 4 h after dark 28.654398 27.046238 30.262558 8 h after dark 21.846348 16.646458 27.046238 12 h after dark 20.815464 20.815464 20.815464