condition	mean	min	max
4 h after light	5.531986666666667	5.33096	5.69056
8 h after light	5.5035	5.33505	5.73741
12 h after light	5.528853333333333	5.45962	5.57609
4 h after dark	5.5054	5.17255	5.81772
8 h after dark	5.44443	5.3553	5.51839
12 h after dark	5.45749	5.31341	5.55428