PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2019/09/27-15:57:50
G02     52.9           38.1               10.0 +/-    1.90      15.0 +/-    1.90  0.260 / 0.550
G05     75.8           68.6               10.4 +/-    0.60      11.1 +/-    0.60  0.290 / 0.600
G12     184.5          39.8               13.2 +/-    1.29      19.3 +/-    1.29  0.040 / 0.070
G13     132.2          10.1               -0.5 +/-   27.29      -1.3 +/-   27.29  0.040 / 0.070
G21     265.7          12.0                8.9 +/-   11.53      23.8 +/-   11.53  0.140 / 0.430
G25     250.4          56.2               11.3 +/-    1.95      13.4 +/-    1.95  0.230 / 0.460
G29     323.4          47.1                9.6 +/-    0.84      12.5 +/-    0.84  0.030 / 0.030