PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2018/01/17-23:13:10
G03     189.8          19.5                8.0 +/-    2.18      17.8 +/-    2.18  0.080 / 0.080
G07     291.2          37.9                8.1 +/-    1.43      12.2 +/-    1.43  0.050 / 0.060
G08     141.7          28.5                8.9 +/-    1.55      16.1 +/-    1.55  0.070 / 0.070
G09     320.0          62.8                6.1 +/-    0.71       6.7 +/-    0.71  0.060 / 0.070
G16     42.7           40.1                5.2 +/-    1.04       7.5 +/-    1.04  0.090 / 0.120
G23     117.8          78.4                5.6 +/-    0.62       5.7 +/-    0.62  0.070 / 0.120
G26     43.6           11.4                5.7 +/-    2.07      15.3 +/-    2.07  0.050 / 0.040
G27     97.1           34.1                7.1 +/-    0.96      11.4 +/-    0.96  0.050 / 0.040
G30     275.5          15.7                7.6 +/-    0.98      18.7 +/-    0.98  0.070 / 0.110