condition	mean	min	max
0 h after light	18.2373	18.0667	18.4079
4 h after light	15.223700000000001	15.1604	15.287
8 h after light	13.571349999999999	13.2568	13.8859
4 h after dark	15.42525	14.4329	16.4176
8 h after dark	16.914299999999997	16.5935	17.2351
12 h after dark	16.8227	16.03	17.6154