PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2019/09/09-08:57:40
G01     121.3          14.8                4.3 +/-    2.85      10.8 +/-    2.85  0.030 / 0.030
G07     73.1           66.9                5.7 +/-    0.66       6.1 +/-    0.66  0.030 / 0.040
G08     48.4           38.1                3.5 +/-    1.14       5.3 +/-    1.14  0.210 / 0.280
G09     176.9          30.4                6.3 +/-    2.07      10.9 +/-    2.07  0.150 / 0.380
G11     113.8          39.1                6.5 +/-    0.77       9.7 +/-    0.77  0.110 / 0.110
G13     319.0          17.2                4.1 +/-    2.34       9.7 +/-    2.34  0.080 / 0.120
G17     200.9          17.6                3.7 +/-    1.28       8.7 +/-    1.28  0.040 / 0.050
G18     97.9           19.1                4.5 +/-    1.89      10.2 +/-    1.89  0.040 / 0.050
G28     276.2          50.2                5.4 +/-    2.65       6.8 +/-    2.65  0.130 / 0.230
G30     337.1          64.2                4.6 +/-    1.09       5.1 +/-    1.09  0.110 / 0.210