PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2017/07/31-05:57:50
G01     300.3          37.0                6.6 +/-    0.91      10.2 +/-    0.91  0.070 / 0.090
G10     112.3          36.2                5.6 +/-    0.39       8.7 +/-    0.39  0.070 / 0.090
G11     271.5          29.2                7.2 +/-    1.32      12.8 +/-    1.32  0.040 / 0.060
G14     14.0           62.5                4.4 +/-    0.74       4.9 +/-    0.74  0.040 / 0.060
G18     120.9          11.0                3.5 +/-    2.19       9.6 +/-    2.19  0.050 / 0.110
G22     311.9          32.1                4.2 +/-    1.90       7.0 +/-    1.90  0.060 / 0.120
G25     70.5           16.9                4.4 +/-    1.04      10.4 +/-    1.04  0.040 / 0.080
G31     158.1          72.1                7.2 +/-    0.82       7.6 +/-    0.82  0.050 / 0.070
G32     42.1           48.5                4.7 +/-    0.68       6.0 +/-    0.68  0.090 / 0.210