PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2019/04/27-02:12:00
G02     48.3           41.6                9.3 +/-    0.46      13.1 +/-    0.46  0.050 / 0.050
G05     88.7           68.6               10.2 +/-    0.49      10.8 +/-    0.49  0.050 / 0.050
G12     190.4          50.9               12.6 +/-    2.29      15.8 +/-    2.29  0.050 / 0.070
G25     262.3          58.6               11.1 +/-    0.72      12.8 +/-    0.72  0.030 / 0.060
G29     321.7          45.2                9.6 +/-    1.17      12.9 +/-    1.17  0.030 / 0.030