PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2019/09/12-13:28:10
G02     212.6          52.2                8.4 +/-    1.11      10.3 +/-    1.11  0.070 / 0.210
G06     75.4           77.4                6.0 +/-    0.43       6.2 +/-    0.43  0.070 / 0.210
G12     316.2          31.5                5.9 +/-    1.62      10.0 +/-    1.62  0.080 / 0.070
G17     50.7           37.7                5.3 +/-    0.76       8.0 +/-    0.76  0.060 / 0.080
G19     34.4           51.4                6.4 +/-    0.54       7.9 +/-    0.54  0.030 / 0.060
G24     274.4          41.7                5.7 +/-    1.19       8.1 +/-    1.19  0.040 / 0.060
G28     116.3          24.1                7.3 +/-    1.46      14.6 +/-    1.46  0.060 / 0.090