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               14.8 +/-    2.14      28.2 +/-    2.14  0.140 / 0.370
G13     54.8           30.5               10.4 +/-    2.29      18.0 +/-    2.29  0.120 / 0.340
G15     100.5          60.2               11.2 +/-    1.55      12.7 +/-    1.55  0.040 / 0.040
G16     296.4          15.7                9.8 +/-    1.52      24.0 +/-    1.52  0.030 / 0.060
G20     267.8          49.8               12.2 +/-    3.02      15.5 +/-    3.02  0.050 / 0.040
G21     332.0          59.1               12.2 +/-    0.43      14.0 +/-    0.43  0.040 / 0.040
G26     268.9          16.1               13.0 +/-    1.44      31.4 +/-    1.44  0.130 / 0.140
G29     164.4          52.3               13.3 +/-    0.87      16.3 +/-    0.87  0.070 / 0.130