PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2019/07/27-07:12:50
G03     246.3          69.9                5.3 +/-    0.56       5.7 +/-    0.56  0.040 / 0.050
G09     301.3          15.4                3.4 +/-    2.19       8.4 +/-    2.19  0.030 / 0.050
G14     96.6           17.1                2.6 +/-    2.00       6.2 +/-    2.00  0.110 / 0.230
G16     130.8          56.1                6.7 +/-    0.89       7.9 +/-    0.89  0.110 / 0.220
G22     199.1          58.7                5.7 +/-    0.56       6.6 +/-    0.56  0.090 / 0.240
G23     320.3          50.4                4.3 +/-    0.74       5.4 +/-    0.74  0.150 / 0.370
G26     74.1           52.7                5.5 +/-    0.91       6.8 +/-    0.91  0.040 / 0.050
G31     51.3           20.4                2.7 +/-    2.29       5.9 +/-    2.29  0.040 / 0.040