PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2017/09/11-17:43:10
G02     22.3           64.1               14.5 +/-    0.36      15.9 +/-    0.36  0.090 / 0.060
G05     158.6          50.7               18.5 +/-    0.45      23.1 +/-    0.45  0.130 / 0.060
G06     49.1           23.7               12.9 +/-    2.52      26.1 +/-    2.52  0.020 / 0.030
G12     221.5          76.6               14.0 +/-    0.63      14.4 +/-    0.63  0.020 / 0.030
G19     93.7           13.7               15.3 +/-    3.15      39.3 +/-    3.15  0.120 / 0.380
G20     197.5          17.9               19.6 +/-    2.90      45.5 +/-    2.90  0.240 / 0.620
G25     305.7          50.0               15.2 +/-    2.49      19.1 +/-    2.49  0.030 / 0.040
G29     302.5          24.4               13.1 +/-    1.20      26.0 +/-    1.20  0.030 / 0.040