PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2018/08/15-20:12:40
G02     59.7           33.5               10.2 +/-    1.56      16.7 +/-    1.56  0.030 / 0.040
G05     56.1           60.1               10.0 +/-    0.62      11.4 +/-    0.62  0.030 / 0.040
G12     181.3          27.3               12.9 +/-    1.18      24.0 +/-    1.18  0.110 / 0.230
G13     126.4          16.4               13.4 +/-    2.10      32.2 +/-    2.10  0.230 / 0.260
G15     165.4          12.1               16.8 +/-    2.04      44.8 +/-    2.04  0.060 / 0.090
G21     272.4          17.4               13.1 +/-    2.22      30.7 +/-    2.22  0.080 / 0.100
G25     232.7          50.5               13.9 +/-    3.53      17.4 +/-    3.53  0.080 / 0.110
G29     328.4          54.9               10.2 +/-    0.97      12.2 +/-    0.97  0.110 / 0.120