PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2018/09/06-17:28:00
G05     143.5          61.6               10.9 +/-    0.67      12.2 +/-    0.67  0.030 / 0.040
G06     54.3           14.5                7.4 +/-    2.38      18.6 +/-    2.38  0.030 / 0.030
G12     190.9          64.8                8.1 +/-    1.51       8.9 +/-    1.51  0.100 / 0.190
G19     98.8           13.2                8.3 +/-    1.50      21.6 +/-    1.50  0.090 / 0.210
G25     294.4          55.2                8.4 +/-    1.14      10.0 +/-    1.14  0.020 / 0.040
G29     307.1          27.3                6.1 +/-    1.50      11.4 +/-    1.50  0.030 / 0.040