PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2017/12/11-14:58:10
G05     49.9           14.9                4.8 +/-    1.67      12.0 +/-    1.67  0.110 / 0.190
G10     238.1          13.8                5.8 +/-    1.83      14.9 +/-    1.83  0.110 / 0.210
G13     73.4           36.9                6.5 +/-    1.04      10.0 +/-    1.04  0.090 / 0.140
G15     116.9          53.9                7.6 +/-    0.43       9.2 +/-    0.43  0.090 / 0.150
G16     315.4          10.9               -4.5 +/-   10.56     -12.2 +/-   10.56  0.040 / 0.030
G18     249.2          46.2                7.6 +/-    3.58      10.0 +/-    3.58  0.040 / 0.030
G20     26.5           66.2                3.2 +/-    0.38       3.4 +/-    0.38  0.140 / 0.270
G21     320.9          53.1                3.7 +/-    0.60       4.6 +/-    0.60  0.120 / 0.340
G26     287.1          19.4                5.5 +/-    0.86      12.3 +/-    0.86  0.060 / 0.050
G29     155.1          64.3                6.4 +/-    0.37       7.0 +/-    0.37  0.040 / 0.050