PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2019/03/14-07:28:00
G05     48.1           17.9                1.7 +/-    2.09       4.0 +/-    2.09  0.050 / 0.060
G10     234.6          11.5               -8.3 +/-   27.85     -22.4 +/-   27.85  0.040 / 0.060
G13     78.2           35.8                5.8 +/-    1.18       9.0 +/-    1.18  0.210 / 0.360
G15     126.2          51.0                6.7 +/-    0.77       8.3 +/-    0.77  0.360 / 0.390
G20     246.2          35.5                6.2 +/-    1.46       9.7 +/-    1.46  0.140 / 0.590
G21     314.3          48.2                3.8 +/-    0.92       4.8 +/-    0.92  0.140 / 0.310
G25     198.9          12.1                1.7 +/-   11.16       4.6 +/-   11.16  0.060 / 0.080
G26     294.3          18.7                3.5 +/-    0.78       7.9 +/-    0.78  0.080 / 0.090
G29     147.8          69.0                6.7 +/-    0.62       7.1 +/-    0.62  0.030 / 0.040