condition mean min max 0 h after light 0.326738 0.279562 0.373914 4 h after light 1.0404035 0.505327 1.57548 8 h after light 0.2107685 0.184389 0.237148 4 h after dark 0.0458513 0.0457609 0.0459417 8 h after dark 1.4397605 0.555911 2.32361 12 h after dark 0.5525955 0.513463 0.591728