PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2018/09/06-21:57:40
G10     271.5          40.9               11.2 +/-    1.62      16.1 +/-    1.62  0.190 / 0.180
G13     40.1           14.9                8.4 +/-    2.38      20.9 +/-    2.38  0.170 / 0.220
G15     58.8           50.7               11.0 +/-    0.66      13.7 +/-    0.66  0.120 / 0.310
G16     274.5          10.8                9.5 +/-    1.13      26.1 +/-    1.13  0.110 / 0.370
G20     305.5          62.0               10.5 +/-    0.84      11.8 +/-    0.84  0.120 / 0.210
G21     13.3           74.1               11.4 +/-    0.83      11.8 +/-    0.83  0.120 / 0.190
G24     114.7          16.8               11.7 +/-    1.61      28.0 +/-    1.61  0.270 / 0.390
G27     317.1          21.2                8.5 +/-    2.82      18.1 +/-    2.82  0.110 / 0.320
G29     168.5          27.6               12.1 +/-    1.33      22.3 +/-    1.33  0.060 / 0.040
G32     204.6          13.9               12.9 +/-    3.85      33.0 +/-    3.85  0.050 / 0.040