condition mean min max 0 h after light 1.77686 1.26006 2.29366 4 h after light 0.7368135 0.452337 1.02129 8 h after light 0.927705 0.903798 0.951612 4 h after dark 0.7281035 0.726668 0.729539 8 h after dark 1.206655 1.02878 1.38453 12 h after dark 0.6955155 0.578243 0.812788