Best track information for ATL 2009 200907 GRACE
      Date&time      longitude       latitude  Min SLP (hPa)   Vmax (knots)
     2009092718         316.80          46.00          995.0           55.0
     2009092800         317.10          45.30          994.0           50.0
     2009092806         318.00          44.70          992.0           45.0
     2009092812         319.70          44.00          992.0           45.0
     2009092818         321.30          43.80          994.0           40.0
     2009092900         322.90          43.60          996.0           40.0
     2009092906         324.20          43.40          998.0           35.0
     2009092912         324.70          42.90         1000.0           35.0
     2009092918         324.80          42.30          999.0           35.0
     2009093000         324.60          41.40          998.0           35.0
     2009093006         324.70          40.30          997.0           35.0
     2009093012         325.40          38.70          996.0           40.0
     2009093018         326.80          37.40          995.0           40.0
     2009100100         328.50          36.60          995.0           40.0
     2009100106         330.30          36.70          995.0           40.0
     2009100112         331.30          37.70          996.0           40.0
     2009100118         331.50          38.60          996.0           40.0
     2009100200         331.20          39.30          997.0           35.0
     2009100206         330.60          39.70          997.0           35.0
     2009100212         330.00          40.20          997.0           35.0
     2009100218         329.60          40.90          996.0           40.0
     2009100300         329.00          41.40          996.0           40.0
     2009100306         328.10          41.40          996.0           35.0
     2009100312         327.50          40.80          996.0           35.0
     2009100318         327.70          39.90          995.0           40.0
     2009100400         328.70          39.10          994.0           40.0
     2009100406         330.50          38.50          993.0           40.0
     2009100412         333.20          38.30          992.0           45.0
     2009100418         336.10          38.80          991.0           50.0
     2009100500         338.70          40.20          989.0           55.0
     2009100506         341.00          42.00          988.0           55.0
     2009100512         342.90          44.30          987.0           55.0
     2009100518         344.50          46.60          986.0           50.0
     2009100600         345.70          48.80          986.0           45.0
     2009100606         347.30          50.00          989.0           40.0
     2009100612         349.40          50.40          993.0           35.0
     2009100618         352.30          50.80          997.0           30.0