condition mean min max 4 h after light 1.857345 1.74965 1.96504 8 h after light 2.0481 1.9552 2.141 12 h after light 2.179745 2.17096 2.18853 4 h after dark 5.5687299999999995 5.40905 5.76295 8 h after dark 4.26626 3.79804 5.03951 12 h after dark 4.181746666666667 3.38303 4.64065