PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2019/07/28-02:43:00
G08     274.4          19.2                8.9 +/-    0.80      19.9 +/-    0.80  0.130 / 0.380
G10     56.8           58.4                9.4 +/-    0.64      10.9 +/-    0.64  0.140 / 0.270
G14     257.7          63.5               10.2 +/-    1.23      11.3 +/-    1.23  0.150 / 0.320
G18     314.1          29.7                7.8 +/-    1.59      13.7 +/-    1.59  0.140 / 0.260
G20     92.0           39.2                9.2 +/-    0.92      13.6 +/-    0.92  0.050 / 0.050
G21     154.7          19.5                8.5 +/-    1.80      18.9 +/-    1.80  0.040 / 0.060
G24     41.5           12.7                5.7 +/-    2.26      15.0 +/-    2.26  0.080 / 0.170
G27     234.8          18.7                9.8 +/-    4.25      22.4 +/-    4.25  0.080 / 0.140
G31     177.8          27.9               10.2 +/-    2.81      18.6 +/-    2.81  0.030 / 0.030
G32     321.2          75.7                9.2 +/-    0.55       9.4 +/-    0.55  0.040 / 0.030