condition	mean	min	max
4 h after light	7.495023333333333	7.389660000000001	7.68279
8 h after light	7.320310000000001	7.221210000000001	7.4691600000000005
12 h after light	7.4709666666666665	7.405310000000001	7.58295
4 h after dark	7.949086666666666	7.696269999999999	8.1358
8 h after dark	7.823723333333334	7.671530000000001	7.968789999999999
12 h after dark	8.083486666666667	7.91206	8.39937