PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2018/05/30-16:57:40
G01     121.5          16.1               13.0 +/-    1.60      31.4 +/-    1.60  0.040 / 0.070
G07     72.3           68.1               13.2 +/-    0.39      14.1 +/-    0.39  0.050 / 0.070
G08     46.8           35.5               12.0 +/-    1.07      18.9 +/-    1.07  0.030 / 0.030
G09     177.2          28.7               13.7 +/-    1.38      24.6 +/-    1.38  0.020 / 0.020
G11     111.2          38.7               13.4 +/-    1.34      19.9 +/-    1.34  0.030 / 0.030
G13     318.9          17.1               11.7 +/-    2.50      27.7 +/-    2.50  0.030 / 0.030
G17     201.8          19.5               13.9 +/-    2.22      30.8 +/-    2.22  0.110 / 0.180
G18     97.4           19.7               12.0 +/-    1.13      26.7 +/-    1.13  0.090 / 0.190
G28     287.9          56.3               12.0 +/-    1.94      14.1 +/-    1.94  0.180 / 0.260
G30     343.0          66.6               12.4 +/-    0.93      13.3 +/-    0.93  0.150 / 0.270