condition mean min max 4 h after light 1.543655 1.43229 1.65502 8 h after light 3.18357 2.87595 3.49119 12 h after light 1.542 1.40791 1.67609 4 h after dark 1.2704533333333334 0.0 2.2288 8 h after dark 0.94906 0.0 1.50977 12 h after dark 2.20891 1.27557 3.25582