PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2019/02/14-21:57:30
G07     356.2          64.5               12.3 +/-    0.53      13.5 +/-    0.53  0.100 / 0.130
G08     80.0           51.2                9.2 +/-    1.40      11.5 +/-    1.40  0.090 / 0.150
G09     183.2          64.1               11.8 +/-    0.50      13.0 +/-    0.50  0.040 / 0.040
G11     138.2          19.9               12.1 +/-    1.45      26.8 +/-    1.45  0.040 / 0.030
G23     158.7          34.2               11.0 +/-    0.85      17.7 +/-    0.85  0.030 / 0.030
G27     49.3           28.5                9.2 +/-    2.13      16.7 +/-    2.13  0.030 / 0.030
G28     243.5          33.4               11.0 +/-    2.53      18.0 +/-    2.53  0.050 / 0.040
G30     308.9          41.0                9.9 +/-    1.97      14.2 +/-    1.97  0.040 / 0.040