PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2017/09/21-01:27:50
G01     318.4          19.0                8.2 +/-    2.07      18.5 +/-    2.07  0.040 / 0.020
G08     254.9          12.5               10.0 +/-    1.54      26.5 +/-    1.54  0.040 / 0.030
G10     80.6           53.5                8.4 +/-    0.51      10.1 +/-    0.51  0.120 / 0.240
G11     300.9          24.9                7.0 +/-    2.04      13.6 +/-    2.04  0.190 / 0.130
G14     305.3          71.5                6.1 +/-    0.70       6.3 +/-    0.70  0.150 / 0.170
G18     102.6          28.5                7.0 +/-    0.75      12.6 +/-    0.75  0.050 / 0.040
G22     300.8          10.8                0.6 +/-    5.07       1.7 +/-    5.07  0.040 / 0.040
G31     177.9          41.3                8.4 +/-    0.98      11.9 +/-    0.98  0.140 / 0.240
G32     2.3            68.3                5.8 +/-    0.27       6.2 +/-    0.27  0.240 / 0.270