PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2018/05/11-18:12:50
G01     122.6          15.4               20.7 +/-    3.04      51.0 +/-    3.04  0.040 / 0.060
G07     68.6           68.5               14.6 +/-    1.02      15.6 +/-    1.02  0.040 / 0.080
G08     47.9           37.4               11.9 +/-    0.46      18.0 +/-    0.46  0.050 / 0.060
G09     177.7          30.3               18.2 +/-    2.61      31.6 +/-    2.61  0.040 / 0.060
G11     113.2          38.1               17.8 +/-    0.86      26.8 +/-    0.86  0.120 / 0.240
G13     319.5          16.0               12.6 +/-    2.48      30.5 +/-    2.48  0.100 / 0.220
G17     201.9          17.5               24.8 +/-    1.29      58.1 +/-    1.29  0.050 / 0.100
G18     98.8           19.2               15.8 +/-    0.92      35.4 +/-    0.92  0.040 / 0.110
G28     286.0          55.8               16.0 +/-    0.90      18.8 +/-    0.90  0.020 / 0.040
G30     342.3          66.1               13.7 +/-    0.56      14.9 +/-    0.56  0.030 / 0.030