PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2017/09/26-21:12:50
G10     261.0          33.7               15.8 +/-    1.83      25.7 +/-    1.83  0.140 / 0.080
G13     45.7           24.0               12.1 +/-    2.26      24.3 +/-    2.26  0.110 / 0.080
G15     66.3           52.6               13.9 +/-    0.87      17.0 +/-    0.87  0.040 / 0.030
G16     288.3          12.6               14.1 +/-    2.10      37.1 +/-    2.10  0.050 / 0.040
G18     289.5          62.4               14.3 +/-    0.78      16.0 +/-    0.78  0.260 / 0.280
G20     50.7           39.0               12.7 +/-    1.10      18.8 +/-    1.10  0.120 / 0.150
G21     354.6          69.2               14.4 +/-    0.71      15.3 +/-    0.71  0.250 / 0.200
G24     126.0          10.5              -12.2 +/-   33.42     -33.7 +/-   33.42  0.050 / 0.080
G27     320.1          15.8               12.7 +/-    2.21      31.1 +/-    2.21  0.040 / 0.070
G29     165.4          32.8               14.7 +/-    0.66      24.3 +/-    0.66  0.060 / 0.080