condition	mean	min	max
4 h after light	5.264245	3.96971	6.55878
8 h after light	4.35222	4.34236	4.36208
12 h after light	7.42912	6.76172	8.09652
4 h after dark	11.77	11.4407	12.2389
8 h after dark	10.6913	10.2298	11.3333
12 h after dark	8.11243	7.00098	8.77894