PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2017/08/13-23:58:10
G10     255.1          29.4               12.8 +/-    3.27      22.7 +/-    3.27  0.120 / 0.320
G13     50.1           28.2                8.8 +/-    1.39      16.0 +/-    1.39  0.210 / 0.340
G15     79.0           57.0                4.5 +/-    1.96       5.2 +/-    1.96  0.110 / 0.100
G16     292.6          14.1                8.8 +/-    1.59      22.3 +/-    1.59  0.180 / 0.120
G18     276.4          58.3              -86.8 +/-   20.14    -100.2 +/-   20.14  0.030 / 0.040
G20     47.0           43.1               11.0 +/-    1.87      15.3 +/-    1.87  0.030 / 0.050
G21     340.7          64.1                9.2 +/-    0.72      10.1 +/-    0.72  0.110 / 0.260
G26     265.1          13.3               11.3 +/-    2.52      29.1 +/-    2.52  0.100 / 0.260
G27     321.9          10.7              -15.0 +/-    8.28     -41.3 +/-    8.28  0.040 / 0.050
G29     165.1          41.4                5.9 +/-    1.28       8.4 +/-    1.28  0.050 / 0.060