condition	mean	min	max
4 h after light	16.717350000000003	16.2723	17.1624
8 h after light	19.19825	18.6373	19.7592
12 h after light	19.223950000000002	16.4986	21.9493
4 h after dark	17.529533333333333	17.2459	17.7521
8 h after dark	15.408533333333335	14.5142	16.9815
12 h after dark	19.1554	17.9349	20.5249