condition	mean	min	max
4 h after light	15.437649	15.169272	15.706026
8 h after light	15.148495	14.668689	15.628301
12 h after light	18.5434175	14.818999	22.267836
4 h after dark	16.3052735	15.812659	16.797888
8 h after dark	15.153159500000001	14.004464	16.301855
12 h after dark	16.724351	16.724351	16.724351