PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2019/05/10-17:27:10
G01     118.2          17.8               12.7 +/-    0.86      29.5 +/-    0.86  0.120 / 0.440
G07     90.6           60.9               11.7 +/-    0.44      13.1 +/-    0.44  0.100 / 0.400
G08     44.8           31.2               10.2 +/-    1.68      17.5 +/-    1.68  0.080 / 0.140
G09     177.7          27.1               10.8 +/-    1.92      20.2 +/-    1.92  0.070 / 0.140
G11     105.0          40.7               14.9 +/-    0.92      21.4 +/-    0.92  0.040 / 0.070
G13     317.2          20.5               12.4 +/-    3.75      26.9 +/-    3.75  0.040 / 0.290
G17     201.1          24.7               12.8 +/-    1.64      25.3 +/-    1.64  0.030 / 0.050
G18     91.9           20.8               14.0 +/-    1.85      30.1 +/-    1.85  0.030 / 0.060
G28     286.1          54.3               11.3 +/-    1.45      13.6 +/-    1.45  0.080 / 0.260
G30     352.7          70.7               11.4 +/-    2.71      12.0 +/-    2.71  0.090 / 0.190