PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2018/10/26-17:42:40
G10     249.4          26.1               12.1 +/-    2.13      23.1 +/-    2.13  0.110 / 0.440
G13     54.7           30.3               10.4 +/-    2.13      18.1 +/-    2.13  0.090 / 0.380
G15     95.2           59.3               11.2 +/-    0.82      12.8 +/-    0.82  0.040 / 0.040
G16     297.2          15.5                7.7 +/-    0.95      18.9 +/-    0.95  0.050 / 0.060
G20     268.0          49.9               11.8 +/-    3.47      14.9 +/-    3.47  0.100 / 0.150
G21     333.9          60.0               10.7 +/-    0.59      12.2 +/-    0.59  0.060 / 0.150
G26     270.1          16.0               11.0 +/-    1.86      26.7 +/-    1.86  0.030 / 0.030
G29     163.8          51.4               13.1 +/-    0.50      16.2 +/-    0.50  0.030 / 0.030