PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2019/03/27-07:28:00
G10     252.3          29.1                6.8 +/-    1.82      12.2 +/-    1.82  0.040 / 0.040
G13     51.5           28.0                4.1 +/-    2.06       7.5 +/-    2.06  0.040 / 0.040
G15     80.5           56.3                7.9 +/-    0.60       9.3 +/-    0.60  0.090 / 0.140
G16     298.9          13.8                5.2 +/-    1.39      13.3 +/-    1.39  0.130 / 0.160
G20     273.0          52.3                9.0 +/-    2.74      11.1 +/-    2.74  0.080 / 0.130
G21     341.6          63.4                6.4 +/-    0.74       7.1 +/-    0.74  0.080 / 0.090
G26     270.1          14.4                5.6 +/-    1.62      14.2 +/-    1.62  0.080 / 0.360
G29     161.6          42.2                7.6 +/-    0.46      10.6 +/-    0.46  0.120 / 0.370