PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2019/09/01-17:58:10
G02     57.2           35.3                9.1 +/-    1.61      14.3 +/-    1.61  0.170 / 0.380
G05     60.2           63.1                7.9 +/-    0.50       8.8 +/-    0.50  0.110 / 0.410
G12     184.1          33.7               10.3 +/-    0.97      16.7 +/-    0.97  0.190 / 0.320
G13     127.3          14.4               11.3 +/-    2.35      28.4 +/-    2.35  0.150 / 0.370
G15     164.9          11.5                5.9 +/-   19.46      16.0 +/-   19.46  0.160 / 0.320
G21     270.7          15.9                8.5 +/-    1.37      20.6 +/-    1.37  0.220 / 0.440
G25     239.4          52.7                8.5 +/-    3.88      10.4 +/-    3.88  0.050 / 0.080
G29     328.0          53.4                9.1 +/-    0.72      11.0 +/-    0.72  0.060 / 0.110