Best track information for ATL 2009 200908 HENRI
      Date&time      longitude       latitude  Min SLP (hPa)   Vmax (knots)
     2009100600         310.80          15.10         1008.0           30.0
     2009100606         309.50          16.10         1007.0           35.0
     2009100612         308.10          17.00         1007.0           35.0
     2009100618         306.60          17.60         1007.0           35.0
     2009100700         305.40          18.00         1006.0           40.0
     2009100706         304.30          18.30         1005.0           45.0
     2009100712         303.20          18.70         1006.0           45.0
     2009100718         302.10          19.00         1007.0           40.0
     2009100800         300.90          19.30         1008.0           35.0
     2009100806         299.70          19.60         1010.0           30.0
     2009100812         298.60          20.00         1011.0           30.0
     2009100818         297.80          20.30         1012.0           25.0
     2009100900         297.10          20.50         1012.0           25.0
     2009100906         296.50          20.60         1012.0           20.0
     2009100912         295.90          20.70         1012.0           20.0
     2009100918         295.10          20.90         1012.0           20.0
     2009101000         294.30          21.00         1012.0           20.0
     2009101006         293.30          20.90         1012.0           20.0
     2009101012         292.40          20.60         1012.0           20.0
     2009101018         291.50          20.30         1012.0           20.0
     2009101100         290.60          20.20         1012.0           20.0
     2009101106         289.50          20.10         1012.0           20.0
     2009101112         288.30          20.20         1013.0           20.0