condition	mean	min	max
4 h after light	19.1651	18.9639	19.3663
8 h after light	6.96327	6.41309	7.51345
12 h after light	4.94492	4.45068	5.43916
4 h after dark	4.291606666666667	3.7712	4.79664
8 h after dark	6.6759933333333334	5.69898	7.72026
12 h after dark	11.714533333333334	11.2559	12.1195