PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2017/09/21-01:13:00
G01     320.3          13.4                7.4 +/-    1.98      19.1 +/-    1.98  0.030 / 0.030
G08     260.9          15.9               10.2 +/-    1.95      24.7 +/-    1.95  0.030 / 0.030
G10     69.4           56.9                9.0 +/-    1.06      10.6 +/-    1.06  0.170 / 0.270
G11     306.7          21.6                9.3 +/-    1.14      19.7 +/-    1.14  0.150 / 0.290
G14     283.7          69.9                7.9 +/-    0.56       8.3 +/-    0.56  0.040 / 0.050
G18     96.6           33.1                8.5 +/-    1.27      14.0 +/-    1.27  0.040 / 0.050
G27     226.6          11.9               10.6 +/-    1.54      28.3 +/-    1.54  0.190 / 0.340
G31     179.1          33.9                9.2 +/-    1.10      14.9 +/-    1.10  0.180 / 0.470
G32     344.7          72.2                8.0 +/-    0.61       8.3 +/-    0.61  0.150 / 0.320