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                4.5 +/-    1.26      10.1 +/-    1.26  0.030 / 0.040
G07     88.4           64.2                5.7 +/-    0.64       6.2 +/-    0.64  0.030 / 0.030
G08     43.4           27.2                3.7 +/-    1.51       6.8 +/-    1.51  0.030 / 0.040
G09     173.8          20.0                5.5 +/-    1.77      12.1 +/-    1.77  0.030 / 0.040
G11     101.5          40.9                7.2 +/-    0.66      10.3 +/-    0.66  0.070 / 0.260
G13     316.4          21.6                1.0 +/-    2.65       2.1 +/-    2.65  0.060 / 0.230
G17     201.3          29.1                5.5 +/-    1.27       9.8 +/-    1.27  0.150 / 0.270
G18     89.4           21.4                5.0 +/-    1.22      10.5 +/-    1.22  0.100 / 0.220
G28     294.5          57.4                3.7 +/-    0.73       4.3 +/-    0.73  0.130 / 0.250
G30     346.7          69.4                4.1 +/-    0.76       4.4 +/-    0.76  0.130 / 0.250