PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2018/09/04-21:27:50
G10     254.0          29.6               12.5 +/-    3.17      22.1 +/-    3.17  0.120 / 0.350
G13     50.1           27.4                6.8 +/-    2.18      12.6 +/-    2.18  0.120 / 0.440
G15     85.4           59.1                9.4 +/-    0.78      10.7 +/-    0.78  0.050 / 0.050
G16     289.9          15.7                9.9 +/-    1.52      24.2 +/-    1.52  0.050 / 0.040
G20     254.5          13.8                4.4 +/-    3.46      11.4 +/-    3.46  0.070 / 0.190
G21     336.9          62.1                9.0 +/-    0.84      10.0 +/-    0.84  0.060 / 0.140
G26     262.6          14.1               12.0 +/-    2.14      30.5 +/-    2.14  0.030 / 0.030
G29     166.2          47.0                9.6 +/-    0.75      12.6 +/-    0.75  0.020 / 0.040