condition mean min max 4 h after light 2.901655 1.92442 3.87889 8 h after light 4.461485 4.20896 4.71401 12 h after light 0.95955 0.0 1.9191 4 h after dark 0.850815 0.0 1.70163 8 h after dark 3.34753 3.33273 3.36233 12 h after dark 2.482655 0.0 4.96531