PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2019/09/29-14:57:40
G02     33.1           54.7                6.7 +/-    0.95       8.0 +/-    0.95  0.020 / 0.030
G05     142.5          62.5                8.7 +/-    0.32       9.7 +/-    0.32  0.030 / 0.030
G06     54.4           13.6                3.7 +/-    4.40       9.5 +/-    4.40  0.130 / 0.240
G12     193.7          65.8                7.2 +/-    0.38       7.8 +/-    0.38  0.090 / 0.250
G25     295.5          53.6                7.2 +/-    3.05       8.7 +/-    3.05  0.030 / 0.030
G29     307.8          28.4                6.2 +/-    0.72      11.3 +/-    0.72  0.030 / 0.030