PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2018/07/12-22:12:30
G02     53.6           38.1               10.3 +/-    0.71      15.5 +/-    0.71  0.030 / 0.040
G05     69.7           65.8               10.2 +/-    1.10      11.1 +/-    1.10  0.030 / 0.040
G12     183.8          37.5               12.8 +/-    1.33      19.4 +/-    1.33  0.080 / 0.110
G13     133.0          10.8               -3.0 +/-   30.47      -8.3 +/-   30.47  0.060 / 0.080
G21     265.8          12.4               11.3 +/-    6.69      30.0 +/-    6.69  0.040 / 0.060
G25     247.4          55.8               11.9 +/-    0.71      14.1 +/-    0.71  0.060 / 0.060
G29     323.3          47.2                9.9 +/-    1.54      13.0 +/-    1.54  0.240 / 0.450