PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2017/07/29-02:12:40
G10     289.2          48.3                7.2 +/-    1.05       9.3 +/-    1.05  0.040 / 0.050
G15     47.8           35.3                7.4 +/-    0.73      11.7 +/-    0.73  0.040 / 0.060
G18     341.9          66.7                8.0 +/-    1.20       8.6 +/-    1.20  0.050 / 0.040
G20     68.3           20.0                7.2 +/-    0.83      15.8 +/-    0.83  0.050 / 0.040
G21     76.3           76.6               10.0 +/-    0.61      10.3 +/-    0.61  0.120 / 0.370
G24     104.4          24.2                6.8 +/-    0.80      13.5 +/-    0.80  0.120 / 0.270
G27     304.1          32.8                7.6 +/-    1.73      12.6 +/-    1.73  0.070 / 0.160
G29     167.7          10.6                9.5 +/-    1.78      26.2 +/-    1.78  0.070 / 0.120
G32     209.1          26.3                9.4 +/-    2.15      17.9 +/-    2.15  0.070 / 0.100