condition mean min max 4 h after light 1.0605005 0.983261 1.13774 8 h after light 1.684305 1.45704 1.91157 12 h after light 1.96251 1.78236 2.14266 4 h after dark 2.799245 2.53938 3.05911 8 h after dark 1.83806 1.60822 2.0679 12 h after dark 1.726585 1.65999 1.79318