PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2017/08/25-11:42:50
G01     126.9          11.6                4.0 +/-    3.50      10.7 +/-    3.50  0.030 / 0.040
G07     59.1           67.9                4.4 +/-    0.60       4.7 +/-    0.60  0.030 / 0.030
G08     49.7           37.8                3.4 +/-    1.08       5.1 +/-    1.08  0.030 / 0.020
G09     175.7          33.5              -23.3 +/-   11.58     -38.1 +/-   11.58  0.030 / 0.020
G11     115.7          34.1                4.6 +/-    1.04       7.5 +/-    1.04  0.130 / 0.060
G17     199.2          17.1                3.0 +/-    1.70       7.2 +/-    1.70  0.080 / 0.090
G28     276.6          52.9                3.5 +/-    3.36       4.3 +/-    3.36  0.110 / 0.280
G30     330.7          58.7                2.7 +/-    0.72       3.1 +/-    0.72  0.120 / 0.240