PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2018/05/19-14:43:00
G03     191.8          24.5               10.5 +/-    2.22      20.8 +/-    2.22  0.050 / 0.100
G07     285.6          34.5               11.3 +/-    1.82      18.2 +/-    1.82  0.050 / 0.080
G08     146.8          23.4               12.5 +/-    2.06      25.4 +/-    2.06  0.100 / 0.130
G09     320.8          58.3               10.3 +/-    0.95      11.9 +/-    0.95  0.090 / 0.130
G16     43.9           41.3                8.8 +/-    0.84      12.5 +/-    0.84  0.110 / 0.140
G23     104.7          78.5               10.1 +/-    0.46      10.3 +/-    0.46  0.140 / 0.190
G26     43.0           13.4                7.8 +/-    2.04      20.1 +/-    2.04  0.030 / 0.030
G27     104.4          31.8               11.8 +/-    0.75      20.0 +/-    0.75  0.030 / 0.020