PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2017/08/17-19:28:00
G02     21.2           64.5               10.8 +/-    0.46      11.8 +/-    0.46  0.020 / 0.030
G05     157.6          51.7               16.8 +/-    1.00      20.8 +/-    1.00  0.020 / 0.030
G06     49.7           22.4                7.6 +/-    0.89      15.7 +/-    0.89  0.040 / 0.060
G12     215.3          75.7               12.3 +/-    1.14      12.7 +/-    1.14  0.040 / 0.070
G19     94.3           13.1               10.9 +/-    1.82      28.4 +/-    1.82  0.090 / 0.170
G20     197.2          19.1               23.8 +/-    2.54      53.5 +/-    2.54  0.070 / 0.170
G25     304.0          51.7               12.9 +/-    0.82      16.0 +/-    0.82  0.030 / 0.050
G29     302.5          24.0               12.1 +/-    1.56      24.2 +/-    1.56  0.030 / 0.040