condition mean min max 4 h after light 7940.0858960000005 7254.326033 8625.845759 8 h after light 7315.165698 7018.59699 7611.734406 12 h after light 7351.225985 6557.777795 8144.674175 4 h after dark 6793.712772 6376.831685 7210.593859 8 h after dark 7658.184145 6877.520849 8438.847441 12 h after dark 7761.351572 7761.351572 7761.351572