condition	mean	min	max
4 h after light	10.91281	8.40362	13.422
8 h after light	10.6162	10.1573	11.0751
12 h after light	12.91585	8.5809	17.2508
4 h after dark	16.0947	13.4275	18.7619
8 h after dark	12.2113	11.699	12.7236
12 h after dark	15.23785	15.1737	15.302