condition	mean	min	max
4 h after light	7.713156666666666	7.55249	7.85922
8 h after light	7.674356666666666	7.6001	7.711869999999999
12 h after light	7.75558	7.638999999999999	7.86828
4 h after dark	7.53577	7.43451	7.623589999999999
8 h after dark	7.3594800000000005	7.160410000000001	7.57967
12 h after dark	7.44402	7.2815199999999995	7.66512