PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2017/09/13-19:28:10
G02     66.8           27.3               11.7 +/-    1.06      21.7 +/-    1.06  0.110 / 0.100
G05     50.8           57.6               14.2 +/-    0.56      16.5 +/-    0.56  0.080 / 0.110
G12     183.4          23.0               18.5 +/-    0.78      37.9 +/-    0.78  0.110 / 0.120
G13     122.4          21.4               17.1 +/-    2.87      36.3 +/-    2.87  0.100 / 0.150
G15     159.0          19.2               20.1 +/-    2.30      45.2 +/-    2.30  0.030 / 0.030
G20     214.3          71.1               16.1 +/-    0.57      16.9 +/-    0.57  0.030 / 0.040
G21     279.1          24.0               15.2 +/-    0.82      30.4 +/-    0.82  0.030 / 0.040
G25     220.8          43.2               15.6 +/-    2.97      21.6 +/-    2.97  0.030 / 0.040
G29     339.2          67.4               14.4 +/-    0.55      15.4 +/-    0.55  0.040 / 0.050