PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2018/05/19-14:42:40
G03     191.8          24.5               10.0 +/-    2.29      19.8 +/-    2.29  0.080 / 0.100
G07     285.6          34.5               11.8 +/-    1.50      19.0 +/-    1.50  0.060 / 0.120
G08     146.8          23.4               14.0 +/-    1.78      28.4 +/-    1.78  0.090 / 0.190
G09     320.8          58.3               10.9 +/-    0.76      12.6 +/-    0.76  0.110 / 0.200
G16     43.9           41.3                9.9 +/-    0.90      14.1 +/-    0.90  0.090 / 0.160
G23     104.7          78.5               10.7 +/-    1.19      10.9 +/-    1.19  0.080 / 0.180
G26     43.0           13.4                7.8 +/-    0.79      20.0 +/-    0.79  0.060 / 0.130
G27     104.4          31.8               12.9 +/-    0.68      21.8 +/-    0.68  0.060 / 0.130
G30     270.6          10.5               -9.6 +/-   32.11     -26.5 +/-   32.11  0.080 / 0.470