PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2018/05/17-17:42:40
G01     124.5          13.8               14.1 +/-    1.23      36.0 +/-    1.23  0.030 / 0.050
G07     61.4           69.2               12.8 +/-    0.39      13.5 +/-    0.39  0.040 / 0.060
G08     49.3           39.1               11.0 +/-    0.92      16.2 +/-    0.92  0.040 / 0.040
G09     177.9          32.7               15.4 +/-    1.33      25.5 +/-    1.33  0.040 / 0.040
G11     115.9          36.9               13.8 +/-    0.83      21.2 +/-    0.83  0.050 / 0.050
G13     320.3          14.1               10.2 +/-    2.10      26.0 +/-    2.10  0.060 / 0.060
G17     201.4          15.4               16.6 +/-    2.75      40.9 +/-    2.75  0.030 / 0.040
G18     101.1          18.1               14.5 +/-    1.21      33.5 +/-    1.21  0.030 / 0.050
G28     281.8          54.7               15.4 +/-    0.93      18.5 +/-    0.93  0.060 / 0.110
G30     338.4          63.9               12.4 +/-    0.83      13.7 +/-    0.83  0.060 / 0.090