condition	mean	min	max
0 h after light	10.38007	8.58144	12.1787
4 h after light	7.8795850000000005	7.65087	8.1083
8 h after light	18.67105	17.6875	19.6546
4 h after dark	13.19525	12.9933	13.3972
8 h after dark	13.08155	12.4292	13.7339
12 h after dark	11.17022	6.98604	15.3544