Best track information for NWP 2011 201121 HAITANG
      Date&time      longitude       latitude  Min SLP (hPa)   Vmax (knots)
     2011092400         111.00          15.60         1010.0           15.0
     2011092406         111.30          15.10         1004.0           25.0
     2011092412         112.10          15.20         1004.0           25.0
     2011092418         112.90          15.60         1004.0           25.0
     2011092500         113.00          16.60         1004.0           25.0
     2011092506         112.50          17.20          996.0           35.0
     2011092512         112.10          16.90          996.0           35.0
     2011092518         111.70          16.80          996.0           35.0
     2011092600         111.30          16.70         1000.0           30.0
     2011092606         110.80          16.60         1000.0           30.0
     2011092612         109.90          16.30         1000.0           30.0
     2011092618         108.90          16.40         1004.0           25.0
     2011092700         108.00          16.70         1007.0           20.0
     2011092706         106.40          16.50         1007.0           20.0