PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2019/04/29-13:27:40
G03     220.8          66.5                7.8 +/-    1.16       8.4 +/-    1.16  0.050 / 0.060
G07     250.3          13.9                5.2 +/-    2.53      13.4 +/-    2.53  0.040 / 0.050
G09     303.8          18.3                5.6 +/-    1.75      12.9 +/-    1.75  0.070 / 0.410
G14     101.0          12.7                7.0 +/-    3.05      18.3 +/-    3.05  0.090 / 0.370
G16     129.7          59.1                9.2 +/-    0.50      10.5 +/-    0.50  0.050 / 0.040
G22     189.5          50.6                9.1 +/-    1.16      11.4 +/-    1.16  0.040 / 0.040
G23     321.0          50.9                5.9 +/-    0.74       7.4 +/-    0.74  0.030 / 0.040
G26     69.3           52.4                6.0 +/-    0.49       7.3 +/-    0.49  0.030 / 0.040
G31     53.2           18.5                5.2 +/-    3.04      11.8 +/-    3.04  0.140 / 0.270