condition	mean	min	max
4 h after light	7.59187	7.29908	7.92603
8 h after light	7.234373333333333	7.01002	7.53557
12 h after light	7.5696900000000005	7.56175	7.577660000000001
4 h after dark	8.06635	7.66818	8.2695
8 h after dark	7.490633333333333	7.390460000000001	7.68405
12 h after dark	7.6408700000000005	7.563560000000001	7.73882