PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2018/08/31-21:27:50
G10     247.7          24.4               13.3 +/-    1.37      26.4 +/-    1.37  0.040 / 0.060
G13     56.7           31.5               11.2 +/-    0.71      19.1 +/-    0.71  0.060 / 0.070
G15     101.2          59.4               12.1 +/-    0.70      13.8 +/-    0.70  0.150 / 0.650
G16     297.3          16.2                8.8 +/-    3.04      21.2 +/-    3.04  0.140 / 0.580
G20     249.9          10.9                5.3 +/-    1.31      14.5 +/-    1.31  0.050 / 0.150
G21     328.2          56.9                9.9 +/-    0.74      11.6 +/-    0.74  0.070 / 0.170
G26     269.5          17.1               13.1 +/-    3.13      31.1 +/-    3.13  0.030 / 0.050
G29     164.2          55.3               12.9 +/-    1.02      15.4 +/-    1.02  0.040 / 0.040