GRB19990421 
17:36:48.943 
     13.1200000    250.0000000
     15.6200000    218.7500000
     18.1200000    206.2500000
     20.6200000    218.7500000
     23.1200000    175.0000000
     25.6200000    118.7500000
     28.1200000    143.7500000
     30.6200000    150.0000000
     33.1200000    131.2500000
     35.6200000     81.2500000
     38.1200000    100.0000000
     40.6200000    106.2500000
     43.1200000     75.0000000
     45.6200000     68.7500000
     48.1200000     62.5000000
     50.6200000     50.0000000
     53.1200000     93.7500000
     55.6200000     56.2500000
     60.6200000     56.2500000
     65.6200000     62.5000000
     70.6200000     43.7500000
     75.6200000     50.0000000
     80.6200000     43.7500000
     85.6200000     15.6250000
     90.6200000     34.3750000
     95.6200000     15.6250000
    100.6200000     20.8333333
    108.1200000     27.0833333
    115.6200000     27.0833333
    123.1200000     12.5000000
    130.6200000     20.8333333
    138.1200000     14.5833333
    145.6200000     18.7500000
    153.1200000     18.7500000
    160.6200000     10.9375000
    170.6200000      6.2500000
    180.6200000      6.2500000
    190.6200000      3.1250000
    200.6200000      9.3750000
    215.6200000     10.4166667
    230.6200000      3.1250000
    245.6200000      6.2500000
    260.6200000     12.5000000
    265.6200000      5.0000000
    290.6200000      5.4687500
    310.6200000      6.2500000
    330.6200000      7.0312500
    350.6200000      3.1250000
    370.6200000      2.3437500
    390.6200000      1.8750000
    415.6200000      2.5000000
    440.6200000      1.8750000
    465.6200000      1.8750000
    490.6200000      1.8750000
    515.6200000      2.5000000
    540.6200000      0.6250000
    565.6200000      0.6250000
    590.6200000      1.8750000
    615.6200000      0.0000000
    640.6200000      1.5625000
    670.6200000      1.0416667
    700.6200000      0.5208333
    730.6200000      0.5208333