PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2017/09/13-20:57:40
G05     48.3           20.7               10.8 +/-    2.07      23.5 +/-    2.07  0.190 / 0.270
G10     236.6          11.9                5.4 +/-   41.45      14.6 +/-   41.45  0.230 / 0.260
G13     77.1           37.5               13.7 +/-    0.88      20.8 +/-    0.88  0.110 / 0.190
G15     124.2          52.4               14.7 +/-    0.46      18.0 +/-    0.46  0.110 / 0.180
G16     316.5          10.7               -1.7 +/-   20.13      -4.8 +/-   20.13  0.350 / 0.110
G18     246.0          42.5               14.3 +/-    0.84      20.0 +/-    0.84  0.200 / 0.160
G20     28.8           65.5               12.2 +/-    0.33      13.3 +/-    0.33  0.030 / 0.030
G21     314.2          48.3               12.4 +/-    1.16      16.0 +/-    1.16  0.030 / 0.030
G26     290.4          19.3               11.5 +/-    0.74      25.7 +/-    0.74  0.030 / 0.030
G29     154.0          67.5               13.9 +/-    0.39      14.9 +/-    0.39  0.030 / 0.040