condition mean min max 2 h after light 1.523221 0.653602 3.10181 6 h after light 1.22898 0.72429 1.66216 10 h after light 1.2896213333333333 0.189561 2.5961 14 h after light 1.181822 0.978042 1.61144 18 h after light 1.1113513333333334 0.407247 1.74652 2 h after dark 1.0949855 0.290958 1.99124