Best track information for SIO 1998 199904 ALISON
      Date&time      longitude       latitude  Min SLP (hPa)   Vmax (knots)
     1998110606          96.30          -9.90            0.0           15.0
     1998110612          96.90         -10.00            0.0           20.0
     1998110618          97.30         -10.20            0.0           20.0
     1998110700          97.80         -10.20            0.0           20.0
     1998110706          98.50         -10.20            0.0           25.0
     1998110712          99.20         -10.40            0.0           25.0
     1998110718          99.60         -10.70            0.0           25.0
     1998110800          99.30         -11.10            0.0           25.0
     1998110806          98.90         -11.50            0.0           25.0
     1998110812          98.10         -12.30            0.0           35.0
     1998110818          97.50         -12.90            0.0           55.0
     1998110900          97.00         -13.30            0.0           55.0
     1998110906          96.30         -13.70            0.0           55.0
     1998110912          95.60         -14.20            0.0           70.0
     1998110918          94.70         -14.60            0.0           70.0
     1998111000          94.00         -15.00            0.0           70.0
     1998111006          93.30         -15.60            0.0           70.0
     1998111012          92.80         -16.30            0.0           70.0
     1998111018          92.50         -16.80            0.0           70.0
     1998111100          92.30         -17.20            0.0           65.0
     1998111106          92.00         -17.70            0.0           65.0
     1998111112          91.80         -18.30            0.0           65.0
     1998111118          91.80         -19.00            0.0           60.0
     1998111200          91.50         -19.10            0.0           65.0
     1998111206          91.10         -19.00            0.0           55.0
     1998111212          90.80         -18.90            0.0           55.0
     1998111218          90.50         -18.60            0.0           50.0