PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2017/11/16-07:27:40
G01     90.1           31.8                7.0 +/-    0.97      11.8 +/-    0.97  0.050 / 0.040
G07     125.6          44.5                8.6 +/-    0.69      11.6 +/-    0.69  0.050 / 0.040
G11     68.8           39.1                6.2 +/-    1.05       9.1 +/-    1.05  0.050 / 0.050
G13     296.2          34.9                5.7 +/-    5.54       9.0 +/-    5.54  0.030 / 0.050
G17     214.4          55.3                9.2 +/-    0.49      11.0 +/-    0.49  0.040 / 0.050
G19     214.5          28.5                8.3 +/-    1.44      15.0 +/-    1.44  0.040 / 0.030
G28     350.5          61.6                5.3 +/-    0.42       5.9 +/-    0.42  0.090 / 0.100
G30     103.7          75.5                6.0 +/-    0.60       6.2 +/-    0.60  0.100 / 0.100