PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2019/08/31-14:57:50
G02     231.8          69.0                7.3 +/-    1.55       7.7 +/-    1.55  0.060 / 0.100
G05     174.2          11.8               10.4 +/-    3.70      27.9 +/-    3.70  0.070 / 0.100
G06     41.8           61.3                7.1 +/-    0.53       8.0 +/-    0.53  0.060 / 0.060
G12     321.0          48.0                5.7 +/-    1.18       7.4 +/-    1.18  0.030 / 0.050
G17     65.7           26.9                5.7 +/-    1.00      10.7 +/-    1.00  0.250 / 0.410
G19     54.0           39.5                7.4 +/-    0.96      10.9 +/-    0.96  0.200 / 0.530
G24     250.8          36.6                7.9 +/-    0.61      12.2 +/-    0.61  0.030 / 0.030
G28     128.8          10.1                9.3 +/-    5.50      25.9 +/-    5.50  0.030 / 0.040