condition mean min max 4 h after light 1.58256 1.28962 1.8755 8 h after light 0.745844 0.731922 0.759766 12 h after light 0.863606 0.734181 0.993031 4 h after dark 3.94782 2.90133 4.99431 8 h after dark 2.60914 2.54436 2.67392 12 h after dark 2.1360349999999997 1.82518 2.44689