condition mean min max 4 h after light 16.490966 15.057545 17.924387 8 h after light 13.41295 13.388502 13.437398 12 h after light 14.245666 13.389032 15.1023 4 h after dark 12.217309 11.731186 12.703432 8 h after dark 13.103236500000001 12.751445 13.455028 12 h after dark 19.73326 19.73326 19.73326