condition	mean	min	max
0 h after light	15.0467	14.4132	15.6802
4 h after light	10.1292	10.0203	10.2381
8 h after light	6.60169	4.94065	8.26273
4 h after dark	17.5298	15.1664	19.8932
8 h after dark	22.4658	22.0161	22.9155
12 h after dark	18.72315	17.1335	20.3128