PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2017/09/27-09:58:10
G01     115.5          20.4                6.3 +/-    2.32      13.8 +/-    2.32  0.040 / 0.030
G07     92.1           62.5                5.8 +/-    1.00       6.5 +/-    1.00  0.050 / 0.040
G08     43.3           26.4                3.1 +/-    2.18       6.0 +/-    2.18  0.040 / 0.040
G09     175.3          20.8                7.1 +/-    0.84      15.3 +/-    0.84  0.030 / 0.050
G11     99.7           40.0                5.8 +/-    0.55       8.5 +/-    0.55  0.070 / 0.140
G13     316.8          20.6                2.1 +/-    1.54       4.6 +/-    1.54  0.100 / 0.120
G17     202.1          30.9                7.5 +/-    2.60      12.9 +/-    2.60  0.100 / 0.160
G28     301.0          58.9                5.3 +/-    0.97       6.1 +/-    0.97  0.080 / 0.170
G30     352.0          70.8                2.8 +/-    0.84       3.0 +/-    0.84  0.110 / 0.090