PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2018/08/18-19:43:10
G02     53.5           38.6                9.3 +/-    1.27      13.9 +/-    1.27  0.030 / 0.020
G05     68.7           65.9               10.8 +/-    0.38      11.7 +/-    0.38  0.040 / 0.030
G12     182.2          35.0               13.4 +/-    0.77      21.2 +/-    0.77  0.220 / 0.320
G13     132.1          11.5               17.2 +/-    1.86      46.4 +/-    1.86  0.150 / 0.280
G21     266.5          12.9               12.9 +/-   12.66      33.9 +/-   12.66  0.060 / 0.090
G25     244.2          55.4               11.1 +/-    0.98      13.2 +/-    0.98  0.070 / 0.100
G29     323.8          48.0                9.6 +/-    0.65      12.5 +/-    0.65  0.040 / 0.040