PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2019/03/04-08:12:40
G05     48.7           16.6                0.4 +/-    1.09       1.0 +/-    1.09  0.050 / 0.090
G10     235.7          12.9                3.9 +/-   12.43      10.1 +/-   12.43  0.060 / 0.090
G13     75.9           35.8                5.9 +/-    1.46       9.2 +/-    1.46  0.170 / 0.190
G15     123.7          52.2                5.6 +/-    0.41       6.9 +/-    0.41  0.100 / 0.340
G20     247.8          36.8                4.7 +/-    1.68       7.2 +/-    1.68  0.130 / 0.410
G21     316.7          49.8                2.1 +/-    0.55       2.6 +/-    0.55  0.210 / 0.260
G25     197.7          10.5                2.6 +/-    2.03       7.3 +/-    2.03  0.030 / 0.040
G26     293.0          18.5                1.8 +/-    0.96       4.0 +/-    0.96  0.030 / 0.040
G29     149.9          67.6                5.9 +/-    0.45       6.3 +/-    0.45  0.040 / 0.050