PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2019/08/31-17:57:50
G02     55.1           37.1                7.6 +/-    0.76      11.6 +/-    0.76  0.160 / 0.300
G05     64.2           64.8                8.5 +/-    0.52       9.3 +/-    0.52  0.140 / 0.330
G12     184.6          36.1               10.4 +/-    1.78      16.1 +/-    1.78  0.060 / 0.080
G13     129.0          12.9                8.6 +/-    2.35      22.4 +/-    2.35  0.060 / 0.100
G15     166.0          9.8               -10.6 +/-    8.50     -29.7 +/-    8.50  0.050 / 0.070
G21     268.9          14.5                8.8 +/-    2.12      22.0 +/-    2.12  0.060 / 0.080
G25     243.0          54.1                8.3 +/-    0.60      10.0 +/-    0.60  0.130 / 0.540
G29     326.5          51.4                7.7 +/-    0.97       9.6 +/-    0.97  0.130 / 0.550