condition mean min max 4 h after light 1.263135 1.0009 1.52537 8 h after light 1.627585 1.36152 1.89365 12 h after light 2.699955 2.4542 2.94571 4 h after dark 3.11601 2.80619 3.42583 8 h after dark 1.2950949999999999 1.27959 1.3106 12 h after dark 1.019829 0.713858 1.3258