PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2018/08/31-21:27:30
G10     247.7          24.4               15.0 +/-    1.13      29.7 +/-    1.13  0.040 / 0.050
G13     56.7           31.5               10.9 +/-    1.23      18.5 +/-    1.23  0.060 / 0.040
G15     101.2          59.4               12.6 +/-    1.08      14.4 +/-    1.08  0.130 / 0.370
G16     297.3          16.2                8.7 +/-    2.48      20.9 +/-    2.48  0.130 / 0.440
G20     249.9          10.9               13.2 +/-    3.41      36.2 +/-    3.41  0.060 / 0.150
G21     328.2          56.9                9.7 +/-    0.27      11.4 +/-    0.27  0.060 / 0.110
G26     269.5          17.1               12.8 +/-    1.48      30.4 +/-    1.48  0.030 / 0.030
G29     164.2          55.3               12.0 +/-    0.38      14.3 +/-    0.38  0.040 / 0.040