PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2018/10/04-19:43:00
G10     261.8          35.2               10.3 +/-    1.72      16.3 +/-    1.72  0.090 / 0.240
G13     44.5           21.8                9.7 +/-    1.25      20.5 +/-    1.25  0.100 / 0.240
G15     70.1           56.0               10.9 +/-    0.52      12.9 +/-    0.52  0.050 / 0.040
G16     283.5          13.7                9.3 +/-    1.36      23.8 +/-    1.36  0.040 / 0.050
G20     288.2          57.9               12.3 +/-    1.24      14.2 +/-    1.24  0.090 / 0.280
G21     353.1          68.7               12.1 +/-    0.66      12.8 +/-    0.66  0.070 / 0.280
G24     121.8          11.6               15.4 +/-    1.85      41.4 +/-    1.85  0.110 / 0.390
G26     257.3          10.2                9.6 +/-    2.21      26.8 +/-    2.21  0.090 / 0.340
G27     321.1          13.7                8.8 +/-    2.35      22.5 +/-    2.35  0.030 / 0.040
G29     167.2          36.9               13.3 +/-    1.28      20.4 +/-    1.28  0.030 / 0.040