condition	mean	min	max
4 h after light	8.366800999999999	7.412272	9.32133
8 h after light	8.0110235	7.56479	8.457257
12 h after light	7.929721499999999	7.713522	8.145921
4 h after dark	7.851725	7.557529	8.145921
8 h after dark	8.63631	8.387326	8.885294
12 h after dark	7.5074	7.5074	7.5074