PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2019/09/16-16:42:10
G02     52.4           38.8                8.2 +/-    0.82      12.2 +/-    0.82  0.050 / 0.070
G05     74.9           68.2                8.7 +/-    0.85       9.3 +/-    0.85  0.040 / 0.060
G12     184.9          40.2               11.8 +/-    1.22      17.1 +/-    1.22  0.200 / 0.600
G21     265.6          12.0                7.5 +/-    2.84      20.2 +/-    2.84  0.250 / 0.730
G25     250.6          56.2               10.8 +/-    0.72      12.7 +/-    0.72  0.040 / 0.080
G29     323.5          47.3                7.5 +/-    1.49       9.8 +/-    1.49  0.040 / 0.080