condition mean min max 4 h after light 0.00902435 0.0 0.0180487 8 h after light 0.008551905 0.00731153 0.00979228 12 h after light 0.0118448 0.0 0.0236896 4 h after dark 0.011820285 0.00780497 0.0158356 8 h after dark 0.007788135 0.00775369 0.00782258 12 h after dark 0.010943335 0.00648407 0.0154026