condition	mean	min	max
0 h after light	17.3331	15.1843	19.4819
4 h after light	15.1214	13.1918	17.051
8 h after light	23.7619	19.9263	27.5975
4 h after dark	21.2362	19.927	22.5454
8 h after dark	13.2863	11.6219	14.9507
12 h after dark	17.96635	16.0287	19.904