condition	mean	min	max
4 h after light	18.74577	18.446086	19.045454
8 h after light	16.1401965	15.000838	17.279555
12 h after light	16.835124999999998	16.027175	17.643075
4 h after dark	17.339494	15.152598	19.52639
8 h after dark	17.345688	17.079728	17.611648
12 h after dark	16.605805	16.605805	16.605805