condition	mean	min	max
4 h after light	16.809075	12.467755	21.150395
8 h after light	23.912326999999998	15.713306	32.111348
12 h after light	17.992113	16.07289	19.911336
4 h after dark	11.370194	8.901485	13.838903
8 h after dark	11.3605185	10.838678	11.882359
12 h after dark	11.533945	11.533945	11.533945