PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2017/09/07-06:27:40
G03     240.7          67.0                7.0 +/-    0.59       7.5 +/-    0.59  0.050 / 0.050
G09     305.5          22.2                6.1 +/-    2.19      12.6 +/-    2.19  0.060 / 0.050
G14     101.9          11.7                5.3 +/-    2.43      14.3 +/-    2.43  0.060 / 0.040
G16     128.8          60.2               10.2 +/-    0.39      11.5 +/-    0.39  0.050 / 0.050
G22     194.0          54.1                7.1 +/-    0.75       8.6 +/-    0.75  0.200 / 0.160
G23     319.3          48.9                5.9 +/-    0.88       7.6 +/-    0.88  0.280 / 0.160
G26     69.8           53.1                8.0 +/-    0.46       9.8 +/-    0.46  0.050 / 0.040
G31     52.5           19.9                4.7 +/-    3.05      10.4 +/-    3.05  0.040 / 0.040