PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2019/09/20-13:43:00
G02     239.0          73.5                4.3 +/-    0.51       4.4 +/-    0.51  0.080 / 0.080
G05     173.6          13.9                5.9 +/-    1.72      15.1 +/-    1.72  0.110 / 0.090
G06     40.7           58.0                4.0 +/-    0.57       4.6 +/-    0.57  0.060 / 0.090
G12     321.5          52.0                4.3 +/-    1.11       5.3 +/-    1.11  0.070 / 0.100
G17     68.8           24.3                4.4 +/-    1.22       8.8 +/-    1.22  0.060 / 0.060
G19     57.2           37.3                4.0 +/-    1.24       6.1 +/-    1.24  0.060 / 0.050
G24     247.6          35.0                6.5 +/-    1.53      10.3 +/-    1.53  0.030 / 0.030
G25     316.0          10.6              -14.2 +/-   19.43     -39.2 +/-   19.43  0.030 / 0.020