PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2019/09/29-14:58:00
G02     33.1           54.7                7.0 +/-    0.48       8.4 +/-    0.48  0.040 / 0.040
G05     142.5          62.5                9.0 +/-    0.46      10.1 +/-    0.46  0.030 / 0.040
G06     54.4           13.6                4.3 +/-    0.94      11.1 +/-    0.94  0.080 / 0.150
G12     193.7          65.8                6.4 +/-    0.94       7.0 +/-    0.94  0.080 / 0.150
G25     295.5          53.6                7.9 +/-    1.15       9.6 +/-    1.15  0.040 / 0.060
G29     307.8          28.4                3.9 +/-    1.16       7.1 +/-    1.16  0.050 / 0.070