PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2017/09/26-09:57:50
G01     117.5          19.0                5.6 +/-    0.95      12.6 +/-    0.95  0.080 / 0.180
G07     87.3           63.8                5.4 +/-    1.03       6.0 +/-    1.03  0.080 / 0.160
G08     44.0           28.4                3.1 +/-    1.70       5.6 +/-    1.70  0.030 / 0.030
G09     175.6          23.0                6.3 +/-    1.14      12.9 +/-    1.14  0.030 / 0.030
G11     102.7          39.3                6.5 +/-    0.58       9.5 +/-    0.58  0.030 / 0.020
G13     317.9          18.9                3.5 +/-    1.29       7.8 +/-    1.29  0.030 / 0.020
G17     201.4          28.5                6.1 +/-    1.85      11.0 +/-    1.85  0.080 / 0.110
G28     296.7          58.1                3.9 +/-    0.93       4.5 +/-    0.93  0.060 / 0.140
G30     347.6          68.9                4.0 +/-    0.45       4.3 +/-    0.45  0.140 / 0.110