PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2019/09/27-19:57:40
G10     286.2          48.7               18.8 +/-    2.95      24.0 +/-    2.95  0.060 / 0.040
G15     48.4           35.7               15.9 +/-    0.89      24.8 +/-    0.89  0.050 / 0.050
G20     334.3          65.1               17.0 +/-    0.83      18.5 +/-    0.83  0.050 / 0.080
G21     56.2           77.3               17.3 +/-    0.40      17.7 +/-    0.40  0.060 / 0.080
G24     108.6          22.6               18.6 +/-    0.71      38.4 +/-    0.71  0.080 / 0.120
G27     309.5          29.5               17.7 +/-    1.10      31.4 +/-    1.10  0.080 / 0.090
G29     168.2          16.6               24.3 +/-    1.72      58.0 +/-    1.72  0.120 / 0.090
G32     206.8          23.8               25.9 +/-    1.43      52.1 +/-    1.43  0.130 / 0.050