condition	mean	min	max
4 h after light	19.370701	18.494903	20.246499
8 h after light	13.292161	12.831682	13.75264
12 h after light	17.4523745	14.821622	20.083127
4 h after dark	14.2349235	13.648225	14.821622
8 h after dark	11.1650125	10.045561	12.284464
12 h after dark	21.617789	21.617789	21.617789