condition	mean	min	max
4 h after light	8.6103185	8.065277	9.15536
8 h after light	8.2982505	8.226131	8.37037
12 h after light	8.582073000000001	7.715524	9.448622
4 h after dark	7.9565505000000005	7.458573	8.454528
8 h after dark	7.7891125	7.352094	8.226131
12 h after dark	7.434013	7.434013	7.434013