PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2017/09/12-20:58:00
G05     47.7           22.3               11.5 +/-    1.00      24.0 +/-    1.00  0.040 / 0.050
G10     235.5          10.5               -6.6 +/-   48.14     -18.2 +/-   48.14  0.030 / 0.040
G13     79.5           37.6               13.7 +/-    0.78      20.8 +/-    0.78  0.110 / 0.250
G15     127.0          51.1               15.8 +/-    0.74      19.7 +/-    0.74  0.090 / 0.300
G18     244.2          41.0               14.6 +/-    2.58      20.9 +/-    2.58  0.230 / 0.440
G20     27.2           67.3               13.7 +/-    0.69      14.7 +/-    0.69  0.190 / 0.370
G21     312.4          47.1               12.2 +/-    0.89      16.0 +/-    0.89  0.060 / 0.130
G25     197.5          10.0               14.0 +/-   19.74      39.0 +/-   19.74  0.060 / 0.140
G26     292.2          19.4               13.2 +/-    1.70      29.6 +/-    1.70  0.040 / 0.080
G29     152.5          69.6               13.5 +/-    0.94      14.3 +/-    0.94  0.040 / 0.080