PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2019/09/08-16:57:50
G02     45.4           44.7                7.7 +/-    0.53      10.5 +/-    0.53  0.040 / 0.050
G05     98.7           70.3                9.1 +/-    0.54       9.6 +/-    0.54  0.040 / 0.060
G12     187.1          49.2               10.0 +/-    1.21      12.7 +/-    1.21  0.030 / 0.070
G25     266.8          58.1               10.0 +/-    0.57      11.5 +/-    0.57  0.050 / 0.060
G29     318.3          40.5               10.0 +/-    1.70      14.4 +/-    1.70  0.050 / 0.080