condition mean min max 4 h after light 1.153504 0.977998 1.32901 8 h after light 0.7086264999999999 0.323653 1.0936 12 h after light 0.6712415 0.587271 0.755212 4 h after dark 1.28425 1.00719 1.71291 8 h after dark 0.7373026666666667 0.553262 0.947235 12 h after dark 0.9025569999999999 0.821344 0.975789