PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2017/12/16-23:12:50
G01     221.0          11.7                8.2 +/-    2.32      22.1 +/-    2.32  0.030 / 0.030
G03     264.0          69.9                5.7 +/-    0.39       6.0 +/-    0.39  0.030 / 0.030
G09     298.5          12.1                2.6 +/-   21.28       7.0 +/-   21.28  0.110 / 0.230
G14     93.5           19.2                6.6 +/-    2.15      14.7 +/-    2.15  0.130 / 0.190
G16     144.7          51.0                8.7 +/-    0.58      10.9 +/-    0.58  0.040 / 0.050
G22     203.9          64.2                7.2 +/-    0.55       7.9 +/-    0.55  0.040 / 0.050
G23     312.7          42.3                5.5 +/-    0.93       7.8 +/-    0.93  0.370 / 0.270
G26     85.8           55.3                7.0 +/-    0.86       8.3 +/-    0.86  0.360 / 0.290
G31     47.7           27.6                4.3 +/-    2.50       8.0 +/-    2.50  0.120 / 0.220