Best track information for SIO 1998 199906 THELMA
      Date&time      longitude       latitude  Min SLP (hPa)   Vmax (knots)
     1998120400         133.90          -8.80            0.0           25.0
     1998120406         133.50          -9.10            0.0           25.0
     1998120412         132.90          -9.20            0.0           25.0
     1998120418         132.50          -9.20            0.0           25.0
     1998120500         132.10          -9.30            0.0           25.0
     1998120506         131.70          -9.40            0.0           25.0
     1998120512         131.60          -9.40            0.0           25.0
     1998120518         131.50          -9.40            0.0           25.0
     1998120600         131.40          -9.50            0.0           30.0
     1998120606         131.30          -9.60            0.0           45.0
     1998120612         131.30          -9.60            0.0           45.0
     1998120618         131.20          -9.70            0.0           55.0
     1998120700         131.10          -9.80            0.0           60.0
     1998120706         131.00         -10.00            0.0           90.0
     1998120712         130.80         -10.40            0.0          100.0
     1998120718         130.50         -10.80            0.0          115.0
     1998120800         130.00         -11.20            0.0          125.0
     1998120806         129.60         -11.50            0.0          120.0
     1998120812         129.20         -11.60            0.0          135.0
     1998120818         128.80         -11.70            0.0          135.0
     1998120900         128.40         -11.90            0.0          130.0
     1998120906         127.90         -12.30            0.0          130.0
     1998120912         127.30         -12.50            0.0          130.0
     1998120918         126.80         -12.90            0.0          130.0
     1998121000         126.50         -13.10            0.0          130.0
     1998121006         126.10         -13.40            0.0          125.0
     1998121012         125.70         -13.90            0.0          125.0
     1998121018         125.30         -14.50            0.0          120.0
     1998121100         125.10         -15.20            0.0          115.0
     1998121106         125.00         -15.80            0.0           90.0
     1998121112         124.90         -16.40            0.0           65.0
     1998121118         124.90         -17.00            0.0           45.0
     1998121200         124.80         -17.50            0.0           40.0
     1998121206         124.40         -17.80            0.0           35.0
     1998121212         124.20         -18.10            0.0           35.0
     1998121218         124.00         -18.40            0.0           40.0
     1998121300         123.30         -18.70            0.0           40.0
     1998121306         122.60         -18.80            0.0           35.0
     1998121312         121.90         -19.00            0.0           35.0
     1998121318         121.40         -19.30            0.0           35.0
     1998121400         121.00         -19.50            0.0           35.0
     1998121406         120.60         -19.70            0.0           35.0
     1998121412         119.90         -19.90            0.0           35.0
     1998121418         119.70         -20.10            0.0           35.0
     1998121500         119.60         -20.30            0.0           35.0
     1998121506         119.40         -21.00            0.0           30.0