condition mean min max 4 h after light 0.0 0.0 0.0 8 h after light 0.0 0.0 0.0 12 h after light 0.029754 0.0 0.089262 4 h after dark 0.11642733333333333 0.0 0.349282 8 h after dark 0.089379 0.0 0.268137 12 h after dark 0.050117999999999996 0.0 0.150354