PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2019/09/17-16:57:30
G02     59.4           33.1                7.1 +/-    0.44      11.7 +/-    0.44  0.050 / 0.080
G05     57.8           62.1                9.4 +/-    0.83      10.4 +/-    0.83  0.050 / 0.070
G12     183.3          31.1                9.7 +/-    1.17      16.7 +/-    1.17  0.120 / 0.460
G13     125.7          15.7               12.3 +/-    1.66      30.1 +/-    1.66  0.150 / 0.390
G15     163.4          13.3               12.0 +/-    3.43      31.2 +/-    3.43  0.130 / 0.240
G21     272.4          17.2                9.8 +/-    2.17      23.1 +/-    2.17  0.110 / 0.230
G25     236.3          51.4                8.2 +/-    1.16      10.1 +/-    1.16  0.080 / 0.130
G29     329.1          55.1                6.2 +/-    1.92       7.4 +/-    1.92  0.070 / 0.120