PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2019/09/19-16:42:40
G02     57.0           35.0                7.8 +/-    1.68      12.3 +/-    1.68  0.140 / 0.330
G05     62.8           64.7                7.9 +/-    0.58       8.6 +/-    0.58  0.170 / 0.420
G12     183.7          34.2                9.3 +/-    1.36      15.0 +/-    1.36  0.190 / 0.290
G13     128.0          13.7                9.5 +/-    2.74      24.4 +/-    2.74  0.200 / 0.320
G15     164.9          11.0                0.1 +/-   21.32       0.3 +/-   21.32  0.140 / 0.370
G21     270.0          15.4                7.2 +/-    2.54      17.6 +/-    2.54  0.160 / 0.370
G25     240.9          53.4                9.8 +/-    3.76      11.8 +/-    3.76  0.030 / 0.030
G29     327.1          52.2                8.1 +/-    0.86      10.0 +/-    0.86  0.040 / 0.030