condition	mean	min	max
4 h after light	3.29268	2.20174	4.38362
8 h after light	6.208125	5.99724	6.41901
12 h after light	21.055999999999997	18.7504	23.3616
4 h after dark	14.4304	13.6426	15.3239
8 h after dark	9.680183333333334	8.22756	11.6907
12 h after dark	3.96469	3.00383	4.46246