PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2018/10/30-06:43:00
G01     117.1          19.2                3.5 +/-    1.70       7.7 +/-    1.70  0.110 / 0.190
G07     88.4           64.2                5.1 +/-    0.86       5.6 +/-    0.86  0.110 / 0.220
G08     43.4           27.2                1.8 +/-    1.54       3.3 +/-    1.54  0.130 / 0.250
G09     173.8          20.0                6.1 +/-    2.56      13.3 +/-    2.56  0.150 / 0.230
G11     101.5          40.9                5.8 +/-    0.60       8.3 +/-    0.60  0.040 / 0.040
G13     316.4          21.6                3.2 +/-    1.82       6.9 +/-    1.82  0.030 / 0.040
G17     201.3          29.1                4.7 +/-    1.36       8.5 +/-    1.36  0.030 / 0.030
G18     89.4           21.4                5.0 +/-    1.18      10.5 +/-    1.18  0.030 / 0.040
G28     294.5          57.4                3.9 +/-    1.00       4.6 +/-    1.00  0.150 / 0.380
G30     346.7          69.4                3.5 +/-    0.89       3.8 +/-    0.89  0.110 / 0.220