PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2018/08/23-22:27:40
G10     258.5          32.9                9.7 +/-    2.25      16.0 +/-    2.25  0.510 / 0.400
G13     46.5           24.2                7.6 +/-    1.87      15.1 +/-    1.87  0.180 / 0.250
G15     75.0           57.1                9.0 +/-    1.58      10.5 +/-    1.58  0.040 / 0.030
G16     285.2          14.8                7.7 +/-    1.71      19.3 +/-    1.71  0.040 / 0.040
G20     260.3          23.1               12.7 +/-    2.85      26.0 +/-    2.85  0.210 / 0.320
G21     343.9          65.6                8.8 +/-    0.20       9.5 +/-    0.20  0.120 / 0.270
G24     125.4          9.5               -15.9 +/-   19.99     -44.9 +/-   19.99  0.120 / 0.310
G26     258.2          11.8               12.4 +/-    1.51      33.3 +/-    1.51  0.080 / 0.170
G27     321.7          11.9               -3.6 +/-   27.86      -9.6 +/-   27.86  0.080 / 0.300
G29     167.2          41.4                8.3 +/-    0.81      11.9 +/-    0.81  0.030 / 0.030