O. Navigation Fix Accuracy and Meteorological Fix Accuracy are used to give an estimate of how accurate the position is. "Navigation accuracy" is a gauge of how well the navigation equipment is operating. The "Meteorological Accuracy" depends on how well the storm center can be defined by the meteorological data: if there is a sudden, sharp wind shift, and the temperature peak and pressure drop all coincide, the met accuracy will be a small number. A weaker storm will probably have a larger met accuracy. Both numbers are reported in nautical miles In this case 1/1 NM means that the equipment and data obtained a highly accurate position as it is within 1 nautical mile.