condition	mean	min	max
0 h after light	21.88845	21.6098	22.1671
4 h after light	11.38335	10.0739	12.6928
8 h after light	12.76425	12.3933	13.1352
4 h after dark	19.80735	19.7227	19.892
8 h after dark	19.8429	19.1447	20.5411
12 h after dark	17.93965	16.6494	19.2299