PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2017/08/31-18:27:30
G02     20.9           64.9               13.5 +/-    0.44      14.7 +/-    0.44  0.050 / 0.120
G05     159.8          49.8               19.3 +/-    0.79      24.4 +/-    0.79  0.040 / 0.060
G06     49.0           23.7               11.5 +/-    0.91      23.2 +/-    0.91  0.230 / 0.370
G12     221.7          76.9               13.1 +/-    0.49      13.4 +/-    0.49  0.300 / 0.500
G19     93.3           13.9               14.8 +/-    1.02      37.7 +/-    1.02  0.020 / 0.040
G20     197.3          17.7               18.6 +/-    1.35      43.2 +/-    1.35  0.030 / 0.030
G24     216.0          9.9                16.8 +/-    4.71      46.9 +/-    4.71  0.050 / 0.050
G25     305.8          50.1               13.6 +/-    0.80      17.2 +/-    0.80  0.050 / 0.060
G29     301.9          23.7               11.7 +/-    2.00      23.6 +/-    2.00  0.160 / 0.150