PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2018/08/29-18:58:10
G02     53.3           38.9                8.2 +/-    1.46      12.2 +/-    1.46  0.030 / 0.030
G05     69.1           66.2                9.8 +/-    0.45      10.6 +/-    0.45  0.040 / 0.020
G12     181.9          34.7               11.6 +/-    1.29      18.6 +/-    1.29  0.150 / 0.260
G13     132.0          11.5               11.4 +/-    2.20      30.7 +/-    2.20  0.180 / 0.360
G21     266.5          12.8                9.2 +/-    4.66      24.0 +/-    4.66  0.050 / 0.040
G25     243.8          55.4               10.7 +/-    0.57      12.7 +/-    0.57  0.040 / 0.070
G29     323.7          47.9                8.4 +/-    0.78      10.8 +/-    0.78  0.090 / 0.090