PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2018/04/08-20:27:40
G01     122.5          15.4               14.0 +/-    3.83      34.6 +/-    3.83  0.060 / 0.060
G07     68.5           68.5               11.4 +/-    0.45      12.2 +/-    0.45  0.040 / 0.050
G08     48.7           39.2                9.0 +/-    1.07      13.2 +/-    1.07  0.040 / 0.030
G09     178.1          30.8               13.5 +/-    1.18      23.3 +/-    1.18  0.030 / 0.030
G11     114.4          38.0               15.0 +/-    0.92      22.6 +/-    0.92  0.170 / 0.250
G13     319.6          15.8               10.6 +/-    2.10      25.8 +/-    2.10  0.170 / 0.310
G17     202.2          16.8               18.5 +/-    3.51      44.1 +/-    3.51  0.030 / 0.030
G18     98.9           19.2               12.5 +/-    0.98      28.0 +/-    0.98  0.030 / 0.030
G28     286.3          56.0               11.4 +/-    2.58      13.4 +/-    2.58  0.100 / 0.210
G30     344.7          66.9               11.1 +/-    0.80      12.0 +/-    0.80  0.100 / 0.170