PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2019/09/07-16:27:50
G02     31.6           55.9                7.5 +/-    0.94       8.8 +/-    0.94  0.040 / 0.060
G05     140.3          62.8                9.3 +/-    1.17      10.4 +/-    1.17  0.040 / 0.060
G06     54.4           13.7                5.4 +/-    1.77      13.9 +/-    1.77  0.050 / 0.050
G12     195.6          66.4                8.0 +/-    0.99       8.6 +/-    0.99  0.050 / 0.040
G25     295.7          53.5                7.7 +/-    0.94       9.3 +/-    0.94  0.040 / 0.060
G29     307.9          28.6                4.7 +/-    0.58       8.5 +/-    0.58  0.040 / 0.050