PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2019/09/11-16:28:10
G02     39.1           49.9               10.3 +/-    0.27      13.0 +/-    0.27  0.040 / 0.060
G05     123.1          68.3               11.6 +/-    0.64      12.4 +/-    0.64  0.040 / 0.060
G12     189.8          57.6               14.4 +/-    0.63      16.7 +/-    0.63  0.030 / 0.050
G25     282.2          57.1               12.8 +/-    1.43      15.0 +/-    1.43  0.040 / 0.040
G29     313.3          34.5               10.1 +/-    0.88      16.3 +/-    0.88  0.020 / 0.040