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               13.3 +/-    1.57      25.8 +/-    1.57  0.050 / 0.030
G13     55.1           31.5                8.7 +/-    1.16      14.8 +/-    1.16  0.050 / 0.040
G15     85.9           56.8               10.7 +/-    0.76      12.5 +/-    0.76  0.040 / 0.050
G16     301.9          13.2                9.8 +/-    2.57      25.5 +/-    2.57  0.030 / 0.050
G18     269.6          56.9               11.9 +/-    1.15      13.9 +/-    1.15  0.120 / 0.330
G20     40.9           50.7                8.8 +/-    0.86      11.0 +/-    0.86  0.140 / 0.320
G21     338.9          62.6                9.6 +/-    0.96      10.7 +/-    0.96  0.140 / 0.400
G26     272.2          15.5               10.5 +/-    2.46      25.9 +/-    2.46  0.150 / 0.380
G29     161.9          44.9               12.5 +/-    0.57      16.8 +/-    0.57  0.070 / 0.140