PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2018/09/12-20:43:00
G10     249.3          25.9               13.7 +/-    1.34      26.3 +/-    1.34  0.090 / 0.110
G13     54.8           30.5               10.1 +/-    0.92      17.5 +/-    0.92  0.070 / 0.120
G15     100.5          60.2               12.1 +/-    0.46      13.8 +/-    0.46  0.050 / 0.050
G16     296.4          15.7               10.7 +/-    4.41      26.1 +/-    4.41  0.050 / 0.050
G20     267.8          49.8               11.6 +/-    0.96      14.7 +/-    0.96  0.070 / 0.150
G21     332.0          59.1               11.4 +/-    0.78      13.1 +/-    0.78  0.090 / 0.170
G26     268.9          16.1               13.0 +/-    2.00      31.4 +/-    2.00  0.030 / 0.050
G29     164.4          52.3               11.7 +/-    1.14      14.4 +/-    1.14  0.030 / 0.050