condition	mean	min	max
4 h after light	1.302635	1.21328	1.39199
8 h after light	4.460255	3.90127	5.01924
12 h after light	6.715745	6.26537	7.16612
4 h after dark	8.138415	7.75095	8.52588
8 h after dark	4.94219	4.62585	5.25853
12 h after dark	2.84283	2.80595	2.87971