condition	mean	min	max
4 h after light	2.005045	1.07767	2.93242
8 h after light	3.637165	3.29099	3.98334
12 h after light	2.65178	2.42339	2.88017
4 h after dark	3.624245	3.51309	3.7354
8 h after dark	2.54955	2.51953	2.57957
12 h after dark	2.589105	2.43472	2.74349