PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2018/09/25-20:13:00
G10     258.7          33.1                9.7 +/-    0.73      16.0 +/-    0.73  0.170 / 0.320
G13     46.4           24.0                9.4 +/-    1.73      18.8 +/-    1.73  0.170 / 0.250
G15     76.3           57.9                8.8 +/-    0.66      10.2 +/-    0.66  0.130 / 0.350
G16     286.3          14.5                6.6 +/-    2.14      16.6 +/-    2.14  0.140 / 0.430
G20     283.0          56.2               11.0 +/-    0.94      12.9 +/-    0.94  0.040 / 0.050
G21     347.1          66.5                8.1 +/-    1.06       8.7 +/-    1.06  0.040 / 0.050
G26     259.7          11.7                9.4 +/-    1.68      25.4 +/-    1.68  0.060 / 0.210
G27     321.9          11.3                0.4 +/-   32.60       1.1 +/-   32.60  0.060 / 0.210
G29     166.7          40.4               11.6 +/-    0.95      16.8 +/-    0.95  0.030 / 0.070