Best track information for SPA 1998 199830 NATHAN
      Date&time      longitude       latitude  Min SLP (hPa)   Vmax (knots)
     1998031912         145.30          -9.80            0.0           20.0
     1998031918         144.80         -10.30            0.0           25.0
     1998032000         144.50         -10.60            0.0           25.0
     1998032006         144.20         -10.80            0.0           25.0
     1998032012         143.90         -11.00            0.0           25.0
     1998032018         143.70         -11.20            0.0           25.0
     1998032100         143.80         -11.50            0.0           35.0
     1998032106         144.10         -11.60            0.0           35.0
     1998032112         144.50         -11.60            0.0           40.0
     1998032118         144.90         -11.80            0.0           40.0
     1998032200         145.20         -11.90            0.0           40.0
     1998032206         145.50         -12.20            0.0           40.0
     1998032212         145.60         -12.60            0.0           40.0
     1998032218         145.60         -13.00            0.0           40.0
     1998032300         145.60         -13.40            0.0           55.0
     1998032306         145.60         -13.80            0.0           55.0
     1998032312         145.80         -14.30            0.0           65.0
     1998032318         146.30         -14.40            0.0           65.0
     1998032400         147.00         -14.40            0.0           60.0
     1998032406         147.80         -14.20            0.0           55.0
     1998032412         148.60         -13.80            0.0           55.0
     1998032418         149.90         -13.50            0.0           55.0
     1998032500         151.70         -13.20            0.0           50.0
     1998032506         153.40         -13.10            0.0           50.0
     1998032512         154.90         -13.10            0.0           50.0
     1998032518         156.00         -13.20            0.0           50.0
     1998032600         156.70         -13.30            0.0           45.0
     1998032606         157.50         -13.50            0.0           40.0
     1998032612         158.20         -13.80            0.0           40.0
     1998032618         158.60         -14.30            0.0           40.0
     1998032700         158.70         -14.90            0.0           40.0
     1998032706         158.70         -15.40            0.0           40.0
     1998032712         158.60         -15.80            0.0           40.0
     1998032718         158.30         -16.00            0.0           40.0
     1998032800         157.90         -16.30            0.0           40.0
     1998032806         157.50         -16.60            0.0           40.0
     1998032812         157.00         -16.60            0.0           40.0
     1998032818         156.20         -16.30            0.0           40.0
     1998032900         155.10         -16.10            0.0           40.0
     1998032906         154.00         -15.70            0.0           40.0
     1998032912         152.90         -15.20            0.0           40.0
     1998032918         152.00         -15.10            0.0           35.0
     1998033000         151.00         -15.10            0.0           35.0
     1998033006         150.00         -15.00            0.0           35.0
     1998033012         148.50         -14.90            0.0           35.0
     1998033018         147.10         -14.50            0.0           35.0
     1998033100         144.90         -13.50            0.0           30.0