condition mean min max 4 h after light 5.123833333333334 5.00569 5.21323 8 h after light 5.0823 5.03182 5.15482 12 h after light 5.214133333333333 5.11747 5.3080099999999995 4 h after dark 5.165183333333333 5.12545 5.2013300000000005 8 h after dark 5.192353333333334 5.1401900000000005 5.23554 12 h after dark 4.97394 4.91308 5.06834