condition	mean	min	max
0 h after light	6.6348	6.37694	6.89266
4 h after light	10.6817	10.534	10.8294
8 h after light	7.66664	6.0358	9.29748
4 h after dark	12.85275	12.5203	13.1852
8 h after dark	19.66555	19.2225	20.1086
12 h after dark	8.600835	6.98287	10.2188