condition	mean	min	max
4 h after light	18.187051	13.638237	22.735865
8 h after light	13.5763125	12.47873	14.673895
12 h after light	15.230159	15.020034	15.440284
4 h after dark	14.9117315	14.839257	14.984206
8 h after dark	15.833973	14.786877	16.881069
12 h after dark	14.984206	14.984206	14.984206