PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2017/11/17-17:12:40
G10     250.0          25.5               12.9 +/-    1.33      24.9 +/-    1.33  0.040 / 0.040
G13     55.1           31.5                9.7 +/-    0.93      16.5 +/-    0.93  0.050 / 0.050
G15     85.9           56.8               11.0 +/-    0.94      12.9 +/-    0.94  0.170 / 0.340
G16     301.9          13.2                8.8 +/-    1.93      22.9 +/-    1.93  0.150 / 0.380
G18     269.6          56.9               13.2 +/-    0.93      15.4 +/-    0.93  0.040 / 0.080
G20     40.9           50.7                8.5 +/-    0.32      10.7 +/-    0.32  0.040 / 0.070
G21     338.9          62.6               10.5 +/-    0.50      11.7 +/-    0.50  0.050 / 0.140
G26     272.2          15.5               11.6 +/-    2.80      28.6 +/-    2.80  0.050 / 0.150
G29     161.9          44.9               13.5 +/-    1.15      18.3 +/-    1.15  0.160 / 0.360