PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2019/08/19-18:58:00
G02     59.5           33.4                7.4 +/-    0.51      12.1 +/-    0.51  0.150 / 0.350
G05     56.1           60.4                8.3 +/-    0.50       9.3 +/-    0.50  0.220 / 0.420
G12     184.0          31.4               11.5 +/-    0.79      19.6 +/-    0.79  0.080 / 0.150
G13     125.3          16.1               12.3 +/-    3.12      29.8 +/-    3.12  0.050 / 0.150
G15     163.1          13.7               12.9 +/-    1.37      33.1 +/-    1.37  0.030 / 0.050
G21     272.8          17.5               12.0 +/-    2.52      28.1 +/-    2.52  0.030 / 0.050
G25     235.5          51.0               10.7 +/-    0.81      13.3 +/-    0.81  0.080 / 0.280
G29     330.0          56.1                9.4 +/-    1.37      11.1 +/-    1.37  0.070 / 0.270