PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2018/10/28-17:58:10
G10     259.2          33.6               10.0 +/-    1.52      16.2 +/-    1.52  0.120 / 0.310
G13     46.0           23.6                7.6 +/-    0.78      15.2 +/-    0.78  0.170 / 0.360
G15     73.0           56.4                8.1 +/-    0.30       9.6 +/-    0.30  0.060 / 0.050
G16     286.5          14.2                7.9 +/-    1.72      20.0 +/-    1.72  0.050 / 0.040
G20     284.0          56.5               10.1 +/-    1.19      11.9 +/-    1.19  0.120 / 0.360
G21     350.2          67.5                7.3 +/-    0.68       7.8 +/-    0.68  0.140 / 0.340
G24     123.3          10.2              -16.5 +/-   24.69     -45.9 +/-   24.69  0.180 / 0.490
G26     260.2          11.4                8.1 +/-    3.40      21.9 +/-    3.40  0.070 / 0.190
G27     322.0          11.3               -6.4 +/-   33.37     -17.4 +/-   33.37  0.070 / 0.210
G29     166.4          39.2               10.6 +/-    0.73      15.5 +/-    0.73  0.030 / 0.060