PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2019/08/17-16:12:40
G02     252.1          76.4                7.6 +/-    0.63       7.8 +/-    0.63  0.050 / 0.050
G05     170.8          19.1                9.5 +/-    1.66      21.5 +/-    1.66  0.040 / 0.050
G06     39.8           53.4                7.4 +/-    0.56       9.0 +/-    0.56  0.110 / 0.440
G12     321.0          55.6                7.6 +/-    1.46       9.1 +/-    1.46  0.150 / 0.520
G17     72.1           22.7                7.0 +/-    1.13      14.5 +/-    1.13  0.030 / 0.040
G19     61.8           34.5                7.5 +/-    0.87      12.1 +/-    0.87  0.040 / 0.040
G24     242.0          32.3               10.0 +/-    1.55      16.8 +/-    1.55  0.110 / 0.120
G25     316.9          14.8                6.1 +/-    3.41      15.3 +/-    3.41  0.130 / 0.140