PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2018/09/20-23:58:10
G08     268.0          19.1                7.0 +/-    1.79      15.8 +/-    1.79  0.120 / 0.360
G10     57.5           59.0                8.4 +/-    0.81       9.7 +/-    0.81  0.140 / 0.390
G11     312.5          16.5               -6.4 +/-   14.20     -15.3 +/-   14.20  0.090 / 0.310
G14     261.1          64.3                6.3 +/-    0.58       6.9 +/-    0.58  0.090 / 0.260
G18     313.2          30.9                8.4 +/-    2.91      14.5 +/-    2.91  0.060 / 0.070
G20     93.1           38.1                9.1 +/-    0.85      13.7 +/-    0.85  0.050 / 0.060
G21     154.4          17.4                9.4 +/-    2.30      22.1 +/-    2.30  0.110 / 0.240
G27     234.5          17.6               10.3 +/-    1.39      24.0 +/-    1.39  0.100 / 0.230
G31     178.4          28.5               10.4 +/-    0.82      18.8 +/-    0.82  0.120 / 0.000
G32     335.3          75.0                7.9 +/-    0.83       8.2 +/-    0.83  0.140 / 0.430