PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2017/10/27-19:13:10
G10     264.6          36.1               12.6 +/-    1.11      19.7 +/-    1.11  0.110 / 0.150
G13     43.6           21.2               11.7 +/-    1.10      24.9 +/-    1.10  0.100 / 0.150
G15     61.0           49.6               13.1 +/-    0.52      16.7 +/-    0.52  0.120 / 0.420
G16     286.5          11.5               13.0 +/-    2.66      35.0 +/-    2.66  0.110 / 0.440
G18     298.1          64.3               12.2 +/-    0.43      13.4 +/-    0.43  0.040 / 0.050
G20     52.6           37.2               11.9 +/-    0.62      18.1 +/-    0.62  0.040 / 0.050
G21     6.6            71.9               13.9 +/-    0.86      14.5 +/-    0.86  0.170 / 0.470
G24     123.2          12.7               12.4 +/-   16.00      32.6 +/-   16.00  0.180 / 0.550
G27     318.8          18.6               11.7 +/-    0.87      26.7 +/-    0.87  0.040 / 0.110
G29     165.1          27.6               13.1 +/-    1.61      24.1 +/-    1.61  0.050 / 0.090