PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2017/09/10-09:28:00
G07     340.8          60.4                2.1 +/-    0.76       2.3 +/-    0.76  0.050 / 0.050
G08     91.7           51.5                4.8 +/-    0.82       5.9 +/-    0.82  0.050 / 0.060
G09     182.3          69.1                4.7 +/-    0.75       5.0 +/-    0.75  0.090 / 0.100
G11     142.3          14.5                3.4 +/-    1.64       8.6 +/-    1.64  0.070 / 0.080
G23     156.8          41.1                4.2 +/-    0.66       6.0 +/-    0.66  0.030 / 0.040
G27     52.1           29.4                3.0 +/-    1.32       5.2 +/-    1.32  0.030 / 0.040
G28     239.6          31.9                3.4 +/-    1.82       5.8 +/-    1.82  0.050 / 0.040
G30     302.9          35.3                2.5 +/-    1.93       4.0 +/-    1.93  0.060 / 0.050