PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2019/09/11-16:57:50
G02     50.2           40.7                7.6 +/-    0.95      10.9 +/-    0.95  0.060 / 0.060
G05     81.3           69.2               10.6 +/-    0.68      11.2 +/-    0.68  0.050 / 0.050
G12     185.6          43.1               12.8 +/-    0.66      17.8 +/-    0.66  0.050 / 0.090
G25     255.4          57.1               11.7 +/-    1.47      13.6 +/-    1.47  0.050 / 0.070
G29     321.9          45.2               10.8 +/-    0.53      14.5 +/-    0.53  0.050 / 0.050