PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2017/09/16-09:58:00
G07     37.9           68.8                3.6 +/-    0.74       3.8 +/-    0.74  0.130 / 0.280
G08     55.4           43.0                4.5 +/-    0.61       6.2 +/-    0.61  0.130 / 0.310
G09     177.0          41.7                6.0 +/-    0.96       8.5 +/-    0.96  0.020 / 0.030
G11     123.1          30.3                6.6 +/-    2.03      11.5 +/-    2.03  0.020 / 0.030
G17     198.6          10.5               -6.8 +/-    9.67     -18.8 +/-    9.67  0.040 / 0.030
G23     161.1          15.8                5.3 +/-    1.19      13.0 +/-    1.19  0.040 / 0.030
G27     38.3           11.7                3.0 +/-    2.22       8.0 +/-    2.22  0.230 / 0.210
G28     266.8          49.3                4.6 +/-    4.29       5.8 +/-    4.29  0.200 / 0.350
G30     324.3          53.6                3.3 +/-    0.65       4.0 +/-    0.65  0.050 / 0.030