PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2018/03/23-19:43:10
G07     318.8          52.0               13.7 +/-    1.40      16.9 +/-    1.40  0.050 / 0.070
G08     120.9          47.5               17.3 +/-    2.00      22.5 +/-    2.00  0.040 / 0.090
G09     237.2          82.3               13.5 +/-    0.73      13.6 +/-    0.73  0.050 / 0.060
G16     44.0           14.8               10.4 +/-    1.53      26.0 +/-    1.53  0.040 / 0.070
G23     150.4          49.2               16.3 +/-    1.04      20.7 +/-    1.04  0.030 / 0.030
G27     65.0           35.3               13.0 +/-    0.77      20.5 +/-    0.77  0.030 / 0.030
G28     230.4          22.0               18.2 +/-    1.16      38.1 +/-    1.16  0.040 / 0.050
G30     295.5          31.0               13.7 +/-    1.35      23.5 +/-    1.35  0.040 / 0.050