condition	mean	min	max
0 h after light	15.100349999999999	15.0643	15.1364
4 h after light	14.313649999999999	13.2462	15.3811
8 h after light	18.90415	17.4117	20.3966
4 h after dark	20.2098	19.5562	20.8634
8 h after dark	16.45965	15.6727	17.2466
12 h after dark	14.9468	13.4618	16.4318