PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2018/08/11-20:12:40
G02     53.8           38.2                8.2 +/-    0.69      12.3 +/-    0.69  0.030 / 0.050
G05     68.1           65.7                8.0 +/-    0.49       8.7 +/-    0.49  0.030 / 0.050
G12     182.5          35.1               12.4 +/-    2.31      19.6 +/-    2.31  0.140 / 0.290
G13     132.0          11.6               10.6 +/-   29.11      28.5 +/-   29.11  0.120 / 0.330
G21     266.7          13.0               11.8 +/-    3.07      30.7 +/-    3.07  0.080 / 0.090
G25     244.1          55.3               12.5 +/-    0.69      14.9 +/-    0.69  0.050 / 0.110
G29     323.9          48.2                8.8 +/-    1.49      11.4 +/-    1.49  0.040 / 0.070