PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2019/08/03-21:28:00
G05     46.1           24.6                7.5 +/-    1.04      14.8 +/-    1.04  0.140 / 0.470
G13     86.0           34.9                9.3 +/-    0.54      14.8 +/-    0.54  0.130 / 0.540
G15     136.0          46.1               12.8 +/-    0.65      17.0 +/-    0.65  0.060 / 0.120
G20     240.9          30.0               11.7 +/-    2.60      20.5 +/-    2.60  0.050 / 0.130
G21     305.0          40.6               10.1 +/-    1.30      14.6 +/-    1.30  0.060 / 0.100
G25     204.6          18.9               11.6 +/-    2.03      26.2 +/-    2.03  0.080 / 0.100
G26     296.8          19.9                9.7 +/-    1.26      21.3 +/-    1.26  0.030 / 0.030
G29     135.6          82.0               10.9 +/-    1.55      11.0 +/-    1.55  0.020 / 0.030