condition	mean	min	max
0 h after light	6.699255	6.19268	7.20583
4 h after light	5.27816	4.13698	6.41934
8 h after light	5.006405	3.46276	6.55005
4 h after dark	18.04505	14.7871	21.303
8 h after dark	11.4505	11.2397	11.6613
12 h after dark	6.596825	5.29666	7.89699