condition	mean	min	max
4 h after light	18.4957	16.7774	20.214
8 h after light	7.871295	7.44063	8.30196
12 h after light	3.6095050000000004	3.16614	4.05287
4 h after dark	4.31792	4.27002	4.3829
8 h after dark	11.064566666666666	10.1808	11.5196
12 h after dark	18.3656	17.3467	19.3698