PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2017/09/15-21:43:00
G10     254.7          29.1               17.2 +/-    3.33      30.7 +/-    3.33  0.080 / 0.100
G13     50.6           28.7               13.3 +/-    1.52      24.0 +/-    1.52  0.110 / 0.120
G15     77.8           56.3               13.3 +/-    0.68      15.6 +/-    0.68  0.160 / 0.290
G16     294.3          13.8               12.8 +/-    1.94      32.8 +/-    1.94  0.190 / 0.280
G18     276.7          58.8               13.1 +/-    2.10      15.1 +/-    2.10  0.050 / 0.060
G20     46.2           44.2               14.4 +/-    0.91      19.7 +/-    0.91  0.050 / 0.060
G21     341.9          64.5               15.5 +/-    0.44      17.0 +/-    0.44  0.050 / 0.060
G26     266.9          13.4               15.3 +/-    4.27      39.6 +/-    4.27  0.040 / 0.060
G27     322.0          10.3              -13.8 +/-   12.56     -38.3 +/-   12.56  0.030 / 0.040
G29     164.3          40.5               16.9 +/-    1.11      24.3 +/-    1.11  0.030 / 0.050