PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2019/09/17-15:57:00
G02     36.4           52.0                6.8 +/-    0.94       8.3 +/-    0.94  0.040 / 0.060
G05     132.4          66.2                8.8 +/-    1.14       9.5 +/-    1.14  0.040 / 0.060
G06     56.9           10.4                7.0 +/-    5.06      19.3 +/-    5.06  0.060 / 0.050
G12     191.2          61.2                9.0 +/-    1.69      10.1 +/-    1.69  0.050 / 0.050
G25     288.4          55.9                6.3 +/-    0.71       7.4 +/-    0.71  0.050 / 0.050
G29     310.9          31.8                6.0 +/-    1.88      10.0 +/-    1.88  0.050 / 0.040