condition	mean	min	max
4 h after light	8.05536	7.01017	9.10055
8 h after light	6.829725	6.43172	7.22773
12 h after light	7.44761	6.60107	8.29415
4 h after dark	9.25419	8.82514	9.68324
8 h after dark	8.216265	8.02492	8.40761
12 h after dark	10.33485	10.1954	10.4743