Best track information for SIO 2009 200922 ILSA
      Date&time      longitude       latitude  Min SLP (hPa)   Vmax (knots)
     2009031618         121.50         -12.60         1007.0           20.0
     2009031700         119.90         -12.90         1004.0           25.0
     2009031706         118.30         -13.00         1004.0           25.0
     2009031712         116.60         -13.50         1000.0           30.0
     2009031718         114.80         -13.30          996.0           35.0
     2009031800         113.20         -13.50          993.0           40.0
     2009031806         111.90         -13.60          985.0           50.0
     2009031812         110.70         -13.70          982.0           55.0
     2009031818         109.70         -14.60          974.0           65.0
     2009031900         108.70         -15.40          970.0           70.0
     2009031906         107.60         -15.90          959.0           85.0
     2009031912         106.80         -16.30          948.0          100.0
     2009031918         105.90         -16.30          948.0          100.0
     2009032000         105.10         -16.20          952.0           95.0
     2009032006         104.40         -16.10          952.0           95.0
     2009032012         103.80         -16.00          956.0           90.0
     2009032018         103.20         -15.90          956.0           90.0
     2009032100         102.40         -16.00          956.0           90.0
     2009032106         101.60         -16.10          959.0           85.0
     2009032112         100.90         -16.10          963.0           80.0
     2009032118         100.20         -16.10          967.0           75.0
     2009032200          99.50         -16.20          970.0           70.0
     2009032206          98.80         -16.40          970.0           70.0
     2009032212          97.90         -16.80          974.0           65.0
     2009032218          96.80         -17.10          982.0           55.0
     2009032300          95.50         -17.30          989.0           45.0
     2009032306          94.20         -17.60          993.0           40.0
     2009032312          92.90         -18.20          996.0           35.0
     2009032318          91.50         -18.60          996.0           35.0
     2009032400          90.10         -19.20         1000.0           30.0
     2009032406          88.90         -19.60         1000.0           30.0
     2009032412          87.70         -20.00         1000.0           30.0
     2009032418          86.10         -20.30         1004.0           25.0
     2009032500          84.60         -21.00         1004.0           25.0
     2009032506          83.30         -21.50         1004.0           25.0
     2009032512          82.10         -22.20         1007.0           20.0
     2009032518          80.80         -23.10         1007.0           20.0
     2009032600          79.80         -23.70         1007.0           20.0
     2009032606          78.90         -24.20         1007.0           20.0
     2009032612          77.80         -24.70         1010.0           15.0