PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2018/10/31-17:28:10
G10     251.9          28.2                9.2 +/-    1.60      16.8 +/-    1.60  0.120 / 0.370
G13     52.0           28.7                7.7 +/-    2.17      13.9 +/-    2.17  0.150 / 0.410
G15     88.4           58.9                8.6 +/-    1.28       9.8 +/-    1.28  0.040 / 0.040
G16     294.5          15.3                6.7 +/-    1.13      16.5 +/-    1.13  0.050 / 0.040
G20     271.9          51.8                9.5 +/-    2.87      11.7 +/-    2.87  0.080 / 0.160
G21     338.0          62.1                8.0 +/-    0.95       8.9 +/-    0.95  0.080 / 0.160
G26     267.5          14.9                8.1 +/-    2.31      20.2 +/-    2.31  0.040 / 0.030
G29     164.6          48.0               11.0 +/-    0.50      14.2 +/-    0.50  0.030 / 0.030