PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2018/12/09-13:58:00
G05     47.9           20.0                3.0 +/-    1.96       6.7 +/-    1.96  0.130 / 0.330
G10     234.9          11.5               -8.5 +/-   26.24     -22.9 +/-   26.24  0.150 / 0.310
G13     77.9           36.1                6.7 +/-    1.26      10.4 +/-    1.26  0.040 / 0.050
G15     129.5          50.9                6.5 +/-    0.55       8.1 +/-    0.55  0.040 / 0.050
G16     316.9          10.9               -1.2 +/-   10.93      -3.2 +/-   10.93  0.230 / 0.120
G20     246.4          35.5                6.3 +/-    2.00       9.9 +/-    2.00  0.170 / 0.180
G21     314.1          48.1                3.6 +/-    0.94       4.6 +/-    0.94  0.040 / 0.090
G26     291.9          19.5                2.0 +/-    1.51       4.5 +/-    1.51  0.070 / 0.090
G29     151.2          73.1                6.2 +/-    0.77       6.5 +/-    0.77  0.020 / 0.020