PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2017/09/05-10:58:10
G01     126.6          11.9                6.7 +/-    2.82      17.9 +/-    2.82  0.030 / 0.040
G07     59.7           68.0                7.1 +/-    0.43       7.6 +/-    0.43  0.030 / 0.030
G08     49.4           37.5                6.2 +/-    1.27       9.4 +/-    1.27  0.040 / 0.030
G09     176.1          33.5                9.2 +/-    0.83      15.0 +/-    0.83  0.040 / 0.030
G11     115.5          34.4                8.9 +/-    0.93      14.3 +/-    0.93  0.040 / 0.050
G17     199.2          17.5                5.7 +/-    1.69      13.3 +/-    1.69  0.040 / 0.060
G28     277.4          53.2                7.2 +/-    3.42       8.8 +/-    3.42  0.110 / 0.300
G30     331.5          59.2                5.4 +/-    0.75       6.2 +/-    0.75  0.120 / 0.200