PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2019/09/07-15:58:00
G02     16.0           66.5                5.5 +/-    0.83       5.9 +/-    0.83  0.170 / 0.350
G05     156.2          50.0                9.0 +/-    1.21      11.4 +/-    1.21  0.180 / 0.300
G06     47.7           24.0                6.9 +/-    0.56      13.8 +/-    0.56  0.050 / 0.090
G12     230.7          79.1                7.1 +/-    0.85       7.2 +/-    0.85  0.070 / 0.090
G19     90.6           15.0                6.6 +/-    1.51      16.4 +/-    1.51  0.100 / 0.220
G24     217.1          11.1                8.3 +/-    1.91      22.5 +/-    1.91  0.110 / 0.180
G25     310.2          43.4                6.5 +/-    2.19       9.0 +/-    2.19  0.020 / 0.030
G29     298.3          19.3                5.8 +/-    1.42      13.1 +/-    1.42  0.030 / 0.030