PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2017/09/05-11:27:50
G01     115.8          20.1                6.5 +/-    0.98      14.4 +/-    0.98  0.150 / 0.320
G07     91.9           62.3                8.3 +/-    0.40       9.3 +/-    0.40  0.130 / 0.280
G08     43.4           26.6                5.3 +/-    1.91       9.9 +/-    1.91  0.030 / 0.030
G09     174.7          20.4                8.9 +/-    1.78      19.3 +/-    1.78  0.030 / 0.020
G11     99.7           39.7                8.5 +/-    0.71      12.5 +/-    0.71  0.020 / 0.030
G13     317.1          20.1                4.6 +/-    2.01      10.1 +/-    2.01  0.030 / 0.030
G17     201.9          30.6                8.7 +/-    1.20      15.0 +/-    1.20  0.100 / 0.110
G28     300.0          58.7                5.4 +/-    1.37       6.2 +/-    1.37  0.130 / 0.110
G30     349.9          70.1                6.4 +/-    0.61       6.7 +/-    0.61  0.090 / 0.100