PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2017/11/19-14:43:10
G02     64.1           28.4                9.5 +/-    0.81      17.1 +/-    0.81  0.040 / 0.040
G05     53.6           58.5                8.9 +/-    0.51      10.2 +/-    0.51  0.020 / 0.030
G12     185.3          28.8               11.1 +/-    1.00      20.0 +/-    1.00  0.170 / 0.210
G13     126.0          18.2               12.6 +/-    2.60      28.9 +/-    2.60  0.220 / 0.200
G15     160.3          16.1               11.0 +/-    2.51      26.7 +/-    2.51  0.040 / 0.040
G20     211.6          63.4               11.5 +/-    0.76      12.7 +/-    0.76  0.040 / 0.030
G21     276.4          23.6                7.0 +/-    0.95      14.0 +/-    0.95  0.080 / 0.110
G25     229.3          48.2                9.7 +/-    2.38      12.5 +/-    2.38  0.090 / 0.110
G29     337.3          64.2                7.6 +/-    0.71       8.3 +/-    0.71  0.110 / 0.080