PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2017/11/08-14:58:10
G02     53.4           37.6               10.7 +/-    1.52      16.2 +/-    1.52  0.020 / 0.030
G05     79.1           68.8               14.5 +/-    0.42      15.4 +/-    0.42  0.020 / 0.020
G12     188.2          43.0               12.8 +/-    0.47      17.8 +/-    0.47  0.120 / 0.450
G20     204.4          49.2               14.3 +/-    0.75      18.2 +/-    0.75  0.140 / 0.460
G21     265.4          14.9                8.5 +/-    1.82      21.1 +/-    1.82  0.040 / 0.050
G25     249.5          56.8               12.4 +/-    2.30      14.5 +/-    2.30  0.050 / 0.050
G29     327.2          52.2                9.2 +/-    0.89      11.4 +/-    0.89  0.040 / 0.050