condition	mean	min	max
4 h after light	10.3057035	10.209217	10.40219
8 h after light	18.120496499999998	14.70127	21.539723
12 h after light	18.6346115	16.06198	21.207243
4 h after dark	15.9762905	9.960168	21.992413
8 h after dark	17.6682175	12.164764	23.171671
12 h after dark	8.294821	8.294821	8.294821