PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2019/11/12-12:42:50
G02     52.0           38.0                7.1 +/-    0.72      10.7 +/-    0.72  0.090 / 0.060
G05     87.2           70.6               11.0 +/-    0.45      11.6 +/-    0.45  0.040 / 0.060
G12     183.1          41.3               11.1 +/-    1.81      15.9 +/-    1.81  0.030 / 0.030
G21     263.7          10.8               -1.4 +/-   14.77      -3.9 +/-   14.77  0.030 / 0.030
G25     255.2          57.4               12.5 +/-    0.68      14.5 +/-    0.68  0.090 / 0.440
G29     321.2          44.2                8.4 +/-    0.90      11.4 +/-    0.90  0.100 / 0.440