PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2018/09/19-19:42:40
G05     49.8           16.2                7.1 +/-    1.80      17.2 +/-    1.80  0.060 / 0.060
G10     238.7          15.7                9.7 +/-    2.03      23.8 +/-    2.03  0.050 / 0.060
G13     70.4           35.6                8.8 +/-    0.78      13.9 +/-    0.78  0.090 / 0.390
G15     127.1          54.3                9.1 +/-    0.64      11.0 +/-    0.64  0.100 / 0.410
G16     310.0          14.0                6.7 +/-    2.28      16.9 +/-    2.28  0.150 / 0.240
G20     251.8          39.9                9.8 +/-    1.50      14.2 +/-    1.50  0.260 / 0.210
G21     317.2          49.6                7.9 +/-    0.87      10.0 +/-    0.87  0.080 / 0.090
G26     283.1          19.9                6.1 +/-    1.79      13.4 +/-    1.79  0.100 / 0.090
G29     158.4          68.4               10.0 +/-    0.35      10.7 +/-    0.35  0.030 / 0.040