PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2018/09/19-21:13:10
G10     276.4          43.4                8.0 +/-    0.60      11.0 +/-    0.60  0.090 / 0.180
G13     38.7           11.6                6.7 +/-    1.75      18.0 +/-    1.75  0.080 / 0.130
G15     54.7           47.2                7.5 +/-    1.04       9.8 +/-    1.04  0.050 / 0.040
G20     314.5          63.4                8.5 +/-    0.79       9.4 +/-    0.79  0.040 / 0.040
G21     28.9           76.0                9.2 +/-    0.56       9.4 +/-    0.56  0.120 / 0.250
G24     110.7          19.0               11.7 +/-    1.52      26.3 +/-    1.52  0.110 / 0.300
G27     314.8          24.1                7.1 +/-    1.00      14.2 +/-    1.00  0.120 / 0.380
G29     168.6          23.2               10.4 +/-    1.73      21.2 +/-    1.73  0.170 / 0.470
G32     205.4          17.6               11.2 +/-    2.43      26.1 +/-    2.43  0.030 / 0.050