PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2019/09/14-18:57:40
G05     48.7           17.7                8.0 +/-    0.49      18.6 +/-    0.49  0.230 / 0.380
G10     236.6          14.8               12.6 +/-    1.53      31.5 +/-    1.53  0.390 / 0.490
G13     73.3           35.1                9.8 +/-    0.67      15.5 +/-    0.67  0.060 / 0.080
G15     123.6          53.1               10.9 +/-    0.94      13.3 +/-    0.94  0.040 / 0.090
G16     312.8          13.1                7.3 +/-    1.32      19.1 +/-    1.32  0.050 / 0.140
G20     249.7          38.7               10.8 +/-    2.09      16.1 +/-    2.09  0.060 / 0.120
G21     314.0          46.8                8.2 +/-    1.03      10.7 +/-    1.03  0.130 / 0.370
G25     199.5          11.1                9.2 +/-   15.20      25.2 +/-   15.20  0.120 / 0.440
G26     286.5          20.1                8.5 +/-    0.91      18.7 +/-    0.91  0.040 / 0.060
G29     154.0          72.0               13.2 +/-    1.33      13.8 +/-    1.33  0.030 / 0.050