PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2019/05/01-00:57:30
G02     25.6           61.2                8.9 +/-    0.69      10.0 +/-    0.69  0.050 / 0.070
G05     148.5          55.1               13.3 +/-    0.69      15.9 +/-    0.69  0.060 / 0.060
G06     48.4           24.5                8.5 +/-    1.31      16.9 +/-    1.31  0.030 / 0.050
G12     229.7          77.2               10.0 +/-    0.51      10.2 +/-    0.51  0.030 / 0.050
G19     93.1           14.2               12.2 +/-    1.87      30.9 +/-    1.87  0.030 / 0.030
G25     306.5          47.9                8.5 +/-    1.24      11.0 +/-    1.24  0.030 / 0.030
G29     302.9          25.3               10.2 +/-    1.35      19.8 +/-    1.35  0.040 / 0.040