PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2019/08/24-17:27:10
G02     32.3           55.3                8.5 +/-    0.95      10.1 +/-    0.95  0.030 / 0.040
G05     136.7          64.0               11.9 +/-    1.15      13.1 +/-    1.15  0.040 / 0.050
G06     55.1           12.9                5.1 +/-    1.16      13.4 +/-    1.16  0.050 / 0.060
G12     195.5          65.5                7.6 +/-    1.47       8.3 +/-    1.47  0.050 / 0.050
G25     293.9          54.2                8.5 +/-    0.83      10.2 +/-    0.83  0.040 / 0.040
G29     308.9          29.8                8.0 +/-    1.86      14.2 +/-    1.86  0.030 / 0.040