condition	mean	min	max
4 h after light	11.4811	4.55524	20.0934
8 h after light	6.52711	1.23276	10.987
12 h after light	6.685203333333334	4.16042	9.52064
4 h after dark	13.30598	8.66534	16.0906
8 h after dark	13.859643333333333	7.57973	20.0429
12 h after dark	14.160866666666667	11.5252	17.8717