condition mean min max 0 h after light 15.7823 14.2062 17.3584 2 h after light 7.628895 7.23143 8.02636 4 h after light 10.226665 8.69203 11.7613 8 h after light 8.442620000000002 8.16698 8.71826 12 h after light 8.052155 7.40157 8.70274 2 h after dark 8.80507 7.94107 9.66907 4 h after dark 9.99104 9.97448 10.0076 8 h after dark 17.2182 15.8804 18.556 12 h after dark 15.43375 13.6299 17.2376