PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2019/09/15-16:42:10
G02     50.9           40.0                6.1 +/-    1.15       8.8 +/-    1.15  0.050 / 0.050
G05     79.9           69.1                8.3 +/-    0.52       8.8 +/-    0.52  0.050 / 0.050
G12     185.3          42.3                8.6 +/-    1.10      12.1 +/-    1.10  0.050 / 0.070
G25     254.1          56.9                6.5 +/-    2.06       7.6 +/-    2.06  0.050 / 0.070
G29     322.3          45.7                8.3 +/-    0.68      11.0 +/-    0.68  0.040 / 0.060