condition	mean	min	max
4 h after light	5.17099	4.75002	5.59196
8 h after light	4.576465	4.43551	4.71742
12 h after light	3.9993499999999997	3.98321	4.01549
4 h after dark	7.006815	6.14541	7.86822
8 h after dark	6.841795	6.42044	7.26315
12 h after dark	5.87734	5.56514	6.18954