condition	mean	min	max
4 h after light	16.26315	13.6892	18.8371
8 h after light	11.23865	10.9864	11.4909
12 h after light	14.6548	13.5456	15.764
4 h after dark	25.5734	22.8883	28.2585
8 h after dark	29.0047	28.9379	29.0715
12 h after dark	23.63485	23.1441	24.1256