PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2017/10/09-17:43:00
G02     67.4           26.2               10.0 +/-    0.76      18.9 +/-    0.76  0.130 / 0.170
G05     50.1           55.9                9.7 +/-    0.40      11.5 +/-    0.40  0.050 / 0.170
G12     183.8          23.3               12.3 +/-    1.91      25.1 +/-    1.91  0.090 / 0.140
G13     122.1          21.6               14.0 +/-    0.75      29.6 +/-    0.75  0.070 / 0.140
G15     158.2          19.8               15.0 +/-    2.71      33.2 +/-    2.71  0.040 / 0.080
G20     215.1          70.4               13.0 +/-    0.66      13.7 +/-    0.66  0.050 / 0.090
G21     279.7          24.9               10.7 +/-    0.91      20.9 +/-    0.91  0.050 / 0.050
G25     222.0          43.5               12.9 +/-    1.19      17.8 +/-    1.19  0.040 / 0.050
G29     341.6          68.8                9.5 +/-    0.91      10.1 +/-    0.91  0.040 / 0.030