PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2017/09/07-22:57:50
G10     274.1          41.4               18.3 +/-    0.54      26.0 +/-    0.54  0.040 / 0.030
G15     53.7           44.2               19.7 +/-    0.60      26.9 +/-    0.60  0.030 / 0.030
G18     315.3          66.0               18.4 +/-    0.85      19.9 +/-    0.85  0.060 / 0.060
G20     59.4           29.3               17.5 +/-    1.18      31.1 +/-    1.18  0.050 / 0.050
G21     26.7           75.6               19.8 +/-    0.69      20.4 +/-    0.69  0.030 / 0.040
G24     115.9          17.7               22.7 +/-    1.62      52.7 +/-    1.62  0.030 / 0.050
G27     314.1          25.2               17.2 +/-    1.55      33.4 +/-    1.55  0.220 / 0.520
G29     167.1          21.0               20.5 +/-    2.46      44.1 +/-    2.46  0.230 / 0.190
G32     206.2          13.3               23.3 +/-    2.00      60.3 +/-    2.00  0.060 / 0.170