PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2017/08/29-11:27:40
G01     126.4          12.0                4.5 +/-    4.93      12.0 +/-    4.93  0.060 / 0.100
G07     60.6           67.9                4.6 +/-    1.05       4.9 +/-    1.05  0.060 / 0.120
G08     49.3           37.4                3.5 +/-    0.49       5.3 +/-    0.49  0.040 / 0.040
G09     175.8          33.0                6.7 +/-    1.18      11.0 +/-    1.18  0.030 / 0.040
G11     115.2          34.4                7.3 +/-    0.94      11.8 +/-    0.94  0.030 / 0.030
G17     199.3          17.7                5.0 +/-    2.14      11.7 +/-    2.14  0.030 / 0.030
G28     277.6          53.3                5.1 +/-    1.07       6.2 +/-    1.07  0.080 / 0.190
G30     331.5          59.2                3.1 +/-    0.74       3.6 +/-    0.74  0.090 / 0.240