condition	mean	min	max
4 h after light	8.455729999999999	8.37473	8.57273
8 h after light	8.640076666666667	8.57254	8.77356
12 h after light	8.783100000000001	8.77706	8.79448
4 h after dark	8.730613333333334	8.67843	8.78653
8 h after dark	8.768040000000001	8.60251	8.8674
12 h after dark	8.525226666666667	8.357389999999999	8.722480000000001