PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2017/08/08-12:57:50
G01     124.9          13.2                5.8 +/-    2.73      15.1 +/-    2.73  0.030 / 0.030
G07     66.9           67.0                5.7 +/-    0.73       6.1 +/-    0.73  0.030 / 0.030
G08     48.1           35.8                4.8 +/-    1.82       7.5 +/-    1.82  0.120 / 0.290
G09     176.1          31.7                4.7 +/-    9.43       8.0 +/-    9.43  0.130 / 0.370
G11     112.6          35.3                7.3 +/-    3.04      11.6 +/-    3.04  0.040 / 0.040
G13     321.3          11.7               -1.1 +/-   12.37      -3.0 +/-   12.37  0.030 / 0.040
G17     199.5          19.5                3.8 +/-    1.81       8.5 +/-    1.81  0.100 / 0.230
G28     280.4          54.1              -10.4 +/-   43.45     -12.5 +/-   43.45  0.100 / 0.210
G30     333.1          60.4                4.3 +/-    0.88       4.9 +/-    0.88  0.110 / 0.490