condition mean min max 4 h after light 9.958673333333333 9.87447 10.049719999999999 8 h after light 9.5786 9.516860000000001 9.61382 12 h after light 9.633783333333334 9.5169 9.70208 4 h after dark 9.752786666666667 9.52449 9.913110000000001 8 h after dark 9.756243333333334 9.53834 9.867410000000001 12 h after dark 9.93589 9.821760000000001 10.03988