PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2018/03/28-07:28:00
G05     48.2           17.7                1.4 +/-    1.04       3.2 +/-    1.04  0.210 / 0.390
G13     80.2           36.8                7.4 +/-    0.87      11.4 +/-    0.87  0.370 / 0.880
G15     126.6          50.5                7.8 +/-    0.66       9.7 +/-    0.66  0.050 / 0.080
G16     316.8          11.2                1.3 +/-   10.42       3.6 +/-   10.42  0.060 / 0.080
G20     314.3          78.6                4.6 +/-    0.77       4.7 +/-    0.77  0.080 / 0.280
G21     310.9          45.7                4.5 +/-    1.09       6.0 +/-    1.09  0.090 / 0.140
G25     201.7          13.5                7.6 +/-    1.66      19.7 +/-    1.66  0.170 / 0.390
G26     289.7          20.8                5.7 +/-    0.91      12.3 +/-    0.91  0.160 / 0.450
G29     152.6          75.3                5.1 +/-    0.76       5.3 +/-    0.76  0.060 / 0.090