condition	mean	min	max
4 h after light	17.933861	17.736761	18.130961
8 h after light	19.182794	18.325022	20.040566
12 h after light	16.9160355	16.514336	17.317735
4 h after dark	17.302004	16.06529	18.538718
8 h after dark	18.8042825	17.641786	19.966779
12 h after dark	13.306496	13.306496	13.306496