PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2019/09/14-19:57:40
G10     258.4          34.2                9.9 +/-    1.80      16.0 +/-    1.80  0.170 / 0.340
G13     46.4           23.4                7.8 +/-    0.74      15.8 +/-    0.74  0.140 / 0.290
G15     71.2           54.9                9.3 +/-    0.69      11.1 +/-    0.69  0.040 / 0.060
G16     287.0          14.9                8.0 +/-    1.46      20.0 +/-    1.46  0.050 / 0.050
G20     283.8          56.6               10.1 +/-    0.69      11.8 +/-    0.69  0.070 / 0.240
G21     344.8          65.3                7.7 +/-    0.84       8.4 +/-    0.84  0.080 / 0.240
G26     260.4          11.9                9.6 +/-    1.57      25.8 +/-    1.57  0.150 / 0.500
G27     321.9          11.5                0.7 +/-   33.07       2.0 +/-   33.07  0.170 / 0.450
G29     165.8          41.3               11.2 +/-    0.85      16.0 +/-    0.85  0.040 / 0.050