PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2019/02/09-07:42:50
G02     54.0           36.8                4.3 +/-    0.96       6.7 +/-    0.96  0.160 / 0.310
G05     71.6           66.4                6.1 +/-    0.54       6.6 +/-    0.54  0.260 / 0.430
G12     187.8          42.6                8.1 +/-    0.48      11.2 +/-    0.48  0.040 / 0.060
G13     133.1          10.1               -3.4 +/-   16.77      -9.5 +/-   16.77  0.060 / 0.060
G21     267.5          17.2                3.0 +/-    7.03       7.2 +/-    7.03  0.140 / 0.250
G25     242.7          56.4                6.1 +/-    0.96       7.2 +/-    0.96  0.130 / 0.270
G29     326.7          51.2                4.9 +/-    0.91       6.1 +/-    0.91  0.030 / 0.030