condition	mean	min	max
4 h after light	18.141163499999998	17.189854	19.092473
8 h after light	18.329916	18.112676	18.547156
12 h after light	17.503688500000003	16.894701	18.112676
4 h after dark	18.0888555	17.714277	18.463434
8 h after dark	18.2343185	17.800557	18.66808
12 h after dark	17.383229	17.383229	17.383229