condition	mean	min	max
4 h after light	7.65706	7.408530000000001	7.836460000000001
8 h after light	7.6090800000000005	7.29005	7.83528
12 h after light	7.61273	7.394819999999999	7.726389999999999
4 h after dark	7.593133333333333	7.27838	7.90307
8 h after dark	7.592016666666667	7.403569999999999	7.7928
12 h after dark	7.4695	7.0624	7.75615