PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2017/08/31-18:27:40
G02     20.9           64.9               13.8 +/-    0.46      15.1 +/-    0.46  0.120 / 0.080
G05     159.8          49.8               19.0 +/-    0.48      24.0 +/-    0.48  0.130 / 0.110
G06     49.0           23.7               12.2 +/-    2.04      24.6 +/-    2.04  0.030 / 0.020
G12     221.7          76.9               13.9 +/-    0.36      14.2 +/-    0.36  0.030 / 0.020
G19     93.3           13.9               15.0 +/-    2.91      38.3 +/-    2.91  0.040 / 0.040
G20     197.3          17.7               19.7 +/-    2.08      46.0 +/-    2.08  0.030 / 0.040
G25     305.8          50.1               14.3 +/-    3.13      18.0 +/-    3.13  0.280 / 0.450
G29     301.9          23.7               11.2 +/-    2.11      22.6 +/-    2.11  0.230 / 0.390