condition	mean	min	max
0 h after light	15.933150000000001	14.8694	16.9969
4 h after light	11.75959	8.28278	15.2364
8 h after light	11.452105	8.52551	14.3787
4 h after dark	15.70025	13.427	17.9735
8 h after dark	19.55605	16.0501	23.062
12 h after dark	12.2336	10.455	14.0122