PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2019/04/29-07:42:50
G08     302.6          21.7                4.0 +/-    1.24       8.4 +/-    1.24  0.090 / 0.090
G10     350.3          62.1                4.8 +/-    0.49       5.4 +/-    0.49  0.080 / 0.100
G14     222.3          38.7                6.9 +/-    1.60      10.2 +/-    1.60  0.060 / 0.050
G20     51.7           56.8                6.7 +/-    1.17       7.8 +/-    1.17  0.050 / 0.060
G21     140.9          48.1                6.1 +/-    0.32       7.9 +/-    0.32  0.030 / 0.030
G24     64.3           28.2                3.5 +/-    1.47       6.4 +/-    1.47  0.040 / 0.030
G27     266.8          35.6                6.7 +/-    1.85      10.5 +/-    1.85  0.070 / 0.090
G32     230.1          55.1                7.1 +/-    2.00       8.5 +/-    2.00  0.060 / 0.090