condition mean min max 2 h after light 1.1993333333333334 1.01396 1.42665 6 h after light 1.1830843333333334 0.891493 1.60021 10 h after light 0.844369 0.660716 0.968221 2 h after dark 0.626782 0.474036 0.799021 6 h after dark 0.6108446666666667 0.530937 0.747708 10 h after dark 0.7080649999999999 0.463444 0.840475