PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2018/05/17-08:43:10
G08     270.0          17.8                6.5 +/-   17.04      15.1 +/-   17.04  0.050 / 0.060
G10     61.2           58.5                0.0 +/-   14.38       0.0 +/-   14.38  0.050 / 0.060
G11     312.2          16.3               -7.6 +/-   10.49     -18.3 +/-   10.49  0.100 / 0.190
G14     261.3          61.9                2.3 +/-   14.75       2.6 +/-   14.75  0.140 / 0.170
G18     312.7          31.0                5.4 +/-   11.82       9.2 +/-   11.82  0.030 / 0.030
G20     103.0          18.1                2.6 +/-   14.15       5.9 +/-   14.15  0.030 / 0.030
G21     154.8          15.5                2.9 +/-   15.49       7.2 +/-   15.49  0.120 / 0.220
G27     231.4          15.7                6.5 +/-   16.63      15.8 +/-   16.63  0.130 / 0.290
G31     176.7          32.3                3.5 +/-    8.88       5.9 +/-    8.88  0.190 / 0.400
G32     346.1          73.6               -0.7 +/-   14.74      -0.7 +/-   14.74  0.090 / 0.210