PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2017/10/14-09:42:30
G01     90.0           31.7                7.7 +/-    0.71      13.0 +/-    0.71  0.050 / 0.060
G07     125.7          43.8                9.3 +/-    1.72      12.7 +/-    1.72  0.050 / 0.070
G11     68.0           38.4                5.2 +/-    0.82       7.8 +/-    0.82  0.060 / 0.060
G13     296.4          34.8                6.1 +/-    1.47       9.8 +/-    1.47  0.070 / 0.060
G17     214.3          55.9                9.0 +/-    1.71      10.6 +/-    1.71  0.040 / 0.050
G19     214.5          28.7                7.4 +/-    1.48      13.3 +/-    1.48  0.040 / 0.040
G28     350.4          61.6                5.0 +/-    0.73       5.6 +/-    0.73  0.060 / 0.110
G30     101.3          76.5                7.4 +/-    0.89       7.6 +/-    0.89  0.060 / 0.080