PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2019/09/11-16:58:10
G02     50.5           40.4                9.1 +/-    1.30      13.1 +/-    1.30  0.050 / 0.060
G05     80.0           69.0               10.7 +/-    0.43      11.3 +/-    0.43  0.050 / 0.070
G12     185.5          42.6               13.8 +/-    2.40      19.2 +/-    2.40  0.110 / 0.530
G21     264.1          10.7                0.3 +/-   28.26       0.8 +/-   28.26  0.130 / 0.510
G25     254.5          56.9               14.4 +/-    0.83      16.8 +/-    0.83  0.050 / 0.060
G29     322.2          45.6               10.2 +/-    1.52      13.7 +/-    1.52  0.050 / 0.070