PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2019/09/04-08:42:40
G07     27.6           68.8                4.9 +/-    0.78       5.3 +/-    0.78  0.030 / 0.040
G08     64.3           49.7                4.2 +/-    0.76       5.3 +/-    0.76  0.030 / 0.030
G09     178.7          47.6                6.5 +/-    0.55       8.5 +/-    0.55  0.080 / 0.150
G11     129.8          29.5                5.7 +/-    0.76      10.1 +/-    0.76  0.090 / 0.360
G18     112.3          11.2                4.7 +/-    1.70      12.8 +/-    1.70  0.190 / 0.320
G23     159.5          16.1                4.0 +/-    1.68       9.8 +/-    1.68  0.160 / 0.360
G27     39.9           16.1                2.7 +/-    2.06       6.6 +/-    2.06  0.040 / 0.060
G28     256.1          40.4                4.9 +/-    2.39       7.1 +/-    2.39  0.050 / 0.050
G30     320.7          51.3                3.2 +/-    0.77       4.0 +/-    0.77  0.040 / 0.050