PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2019/09/18-02:58:10
G01     227.1          19.7                6.9 +/-    2.60      15.2 +/-    2.60  0.160 / 0.390
G03     297.8          64.5                4.3 +/-    0.67       4.7 +/-    0.67  0.180 / 0.400
G14     81.3           28.8                5.6 +/-    2.23      10.0 +/-    2.23  0.080 / 0.120
G16     147.6          41.3                6.4 +/-    0.70       9.2 +/-    0.70  0.100 / 0.210
G22     234.2          73.1                5.2 +/-    0.61       5.4 +/-    0.61  0.040 / 0.030
G23     305.4          36.2                5.2 +/-    1.73       8.1 +/-    1.73  0.040 / 0.030
G26     103.9          53.0                6.0 +/-    0.50       7.3 +/-    0.50  0.050 / 0.090
G31     44.6           34.1                3.7 +/-    1.16       5.9 +/-    1.16  0.060 / 0.080