condition mean min max 4 h after light 2.2197899999999997 2.16605 2.27353 8 h after light 1.7951899999999998 1.74596 1.84442 12 h after light 2.030615 1.9921 2.06913 4 h after dark 2.457603333333333 1.75206 2.94346 8 h after dark 2.25124 2.16269 2.36782 12 h after dark 1.7927366666666666 1.20017 2.2175