PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2019/09/15-07:58:00
G07     26.6           68.8                5.7 +/-    0.88       6.1 +/-    0.88  0.030 / 0.040
G08     63.7           49.2                4.9 +/-    1.35       6.3 +/-    1.35  0.020 / 0.030
G09     178.4          47.2                7.7 +/-    0.82      10.0 +/-    0.82  0.120 / 0.190
G11     130.1          29.5                7.6 +/-    0.87      13.4 +/-    0.87  0.090 / 0.440
G18     112.3          11.2                5.6 +/-    1.93      15.3 +/-    1.93  0.040 / 0.050
G23     159.7          16.5                4.9 +/-    2.18      11.9 +/-    2.18  0.040 / 0.050
G27     39.9           16.1                3.3 +/-    2.58       8.0 +/-    2.58  0.210 / 0.350
G28     256.0          40.2                6.3 +/-    1.80       9.1 +/-    1.80  0.150 / 0.360
G30     320.3          50.9                4.1 +/-    0.86       5.1 +/-    0.86  0.060 / 0.120