condition mean min max 4 h after light 0.391967 0.351262 0.432672 8 h after light 0.40461400000000003 0.382419 0.426809 12 h after light 0.7438465000000001 0.66166 0.826033 4 h after dark 2.156965 1.9326 2.38133 8 h after dark 1.255685 1.19335 1.31802 12 h after dark 0.619155 0.503507 0.734803