PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2019/10/14-13:57:20
G02     34.6           53.5                5.7 +/-    1.36       6.9 +/-    1.36  0.040 / 0.040
G05     143.1          62.8                7.6 +/-    0.37       8.4 +/-    0.37  0.030 / 0.040
G06     54.7           13.1                3.4 +/-    2.31       8.8 +/-    2.31  0.030 / 0.030
G12     191.8          64.5                6.7 +/-    0.56       7.4 +/-    0.56  0.030 / 0.030
G25     294.4          54.1                5.5 +/-    3.08       6.6 +/-    3.08  0.070 / 0.040
G29     308.1          28.7                4.7 +/-    0.89       8.5 +/-    0.89  0.060 / 0.040