condition	mean	min	max
4 h after light	21.35315	19.8109	22.8954
8 h after light	11.6187	10.9109	12.3265
12 h after light	9.181625	8.29105	10.0722
4 h after dark	10.544	10.1542	10.8141
8 h after dark	16.221	14.9424	17.2689
12 h after dark	19.781133333333333	19.1434	20.8343