PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2019/09/30-15:12:10
G02     40.8           48.2                7.3 +/-    0.69       9.4 +/-    0.69  0.030 / 0.040
G05     123.5          68.7                8.3 +/-    0.28       8.9 +/-    0.28  0.040 / 0.050
G12     188.3          56.1                7.8 +/-    0.39       9.2 +/-    0.39  0.020 / 0.030
G25     280.5          57.4               12.5 +/-    1.71      14.5 +/-    1.71  0.030 / 0.030
G29     313.6          34.8                7.0 +/-    0.55      11.2 +/-    0.55  0.040 / 0.050