PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2018/10/22-17:12:40
G05     47.3           22.8                8.6 +/-    2.30      17.7 +/-    2.30  0.410 / 0.870
G13     78.9           36.2               12.4 +/-    1.43      19.3 +/-    1.43  0.220 / 0.590
G15     133.7          49.8               13.4 +/-    0.48      17.0 +/-    0.48  0.170 / 0.410
G16     316.3          11.4                3.9 +/-   15.44      10.5 +/-   15.44  0.130 / 0.560
G20     245.7          34.9               12.9 +/-    1.97      20.4 +/-    1.97  0.050 / 0.170
G25     197.9          11.3               13.3 +/-    4.37      36.1 +/-    4.37  0.150 / 0.390
G26     290.8          20.2                9.1 +/-    1.63      19.9 +/-    1.63  0.060 / 0.090
G29     151.9          75.4               12.9 +/-    0.70      13.3 +/-    0.70  0.070 / 0.100