PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2019/03/19-19:42:30
G07     358.9          64.9               12.3 +/-    0.69      13.4 +/-    0.69  0.040 / 0.040
G08     80.9           51.5               12.6 +/-    1.39      15.6 +/-    1.39  0.030 / 0.030
G09     184.5          64.8               12.2 +/-    0.74      13.3 +/-    0.74  0.100 / 0.140
G11     138.4          20.0               11.0 +/-    2.74      24.2 +/-    2.74  0.100 / 0.130
G23     158.5          33.4               11.9 +/-    1.15      19.4 +/-    1.15  0.030 / 0.030
G27     49.0           28.1               10.0 +/-    1.78      18.3 +/-    1.78  0.040 / 0.030
G28     243.3          32.8               12.5 +/-    1.98      20.7 +/-    1.98  0.090 / 0.050
G30     309.5          41.8               11.4 +/-    1.26      16.0 +/-    1.26  0.080 / 0.060