And just to be clear, although we associate the Richter Scale as the way we measure earthquakes now the one we actually use now is the Moment Magnitude Scale, and the reason why most people don't make a huge differentiation between the two is that the Moment Magnitude scale was calibrated to the Richter Scale for the whole reason why we moved to the Moment Magnitude Scale is that the Richter Scale starts to kind of max out at around magnitude 7 earthqukes.