condition mean min max 4 h after light 12.539873 12.401417 12.678329 8 h after light 13.1378275 12.678329 13.597326 12 h after light 11.6724485 11.539854 11.805043 4 h after dark 14.057269999999999 12.970206 15.144334 8 h after dark 12.4063325 12.280952 12.531713 12 h after dark 12.678329 12.678329 12.678329