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               18.9 +/-    3.43      46.5 +/-    3.43  0.040 / 0.040
G07     68.6           68.5               15.5 +/-    0.39      16.6 +/-    0.39  0.040 / 0.060
G08     47.9           37.4               12.8 +/-    1.10      19.4 +/-    1.10  0.030 / 0.030
G09     177.7          30.3               19.5 +/-    3.21      34.0 +/-    3.21  0.030 / 0.040
G11     113.2          38.1               17.8 +/-    0.73      26.8 +/-    0.73  0.030 / 0.030
G13     319.5          16.0               12.9 +/-    3.08      31.3 +/-    3.08  0.020 / 0.030
G17     201.9          17.5               23.1 +/-    1.85      54.2 +/-    1.85  0.100 / 0.190
G18     98.8           19.2               15.6 +/-    1.13      35.0 +/-    1.13  0.100 / 0.220
G28     286.0          55.8               15.6 +/-    2.51      18.4 +/-    2.51  0.170 / 0.310
G30     342.3          66.1               15.7 +/-    0.38      17.0 +/-    0.38  0.150 / 0.260