condition	mean	min	max
0 h after light	18.9635	18.5889	19.3381
4 h after light	12.16925	11.8833	12.4552
8 h after light	11.03555	10.7757	11.2954
4 h after dark	16.374200000000002	15.0067	17.7417
8 h after dark	16.52785	16.1563	16.8994
12 h after dark	18.56945	17.3629	19.776