condition mean min max 0 h after light 0.256273 0.256045 0.256501 4 h after light 1.66201 1.30445 2.01957 8 h after light 1.0279099999999999 1.01327 1.04255 4 h after dark 1.13409 1.00587 1.26231 8 h after dark 2.407325 2.01738 2.79727 12 h after dark 0.250131 0.0 0.500262