PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2019/08/13-18:12:20
G02     32.9           54.9              -14.8 +/-    0.69     -17.6 +/-    0.69  0.040 / 0.050
G05     135.7          64.1               12.1 +/-    0.67      13.3 +/-    0.67  0.040 / 0.050
G06     55.0           13.0                5.9 +/-    1.14      15.3 +/-    1.14  0.040 / 0.060
G12     196.3          65.8                8.5 +/-    0.99       9.2 +/-    0.99  0.040 / 0.060
G25     293.9          54.2                9.3 +/-    0.79      11.2 +/-    0.79  0.040 / 0.070
G29     309.0          30.0                8.9 +/-    1.74      15.5 +/-    1.74  0.040 / 0.050