PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2017/10/30-14:43:00
G02     33.6           55.4                9.2 +/-    0.49      10.9 +/-    0.49  0.040 / 0.030
G05     144.8          60.8               12.0 +/-    0.53      13.5 +/-    0.53  0.040 / 0.040
G06     52.9           18.8                6.6 +/-    1.61      15.0 +/-    1.61  0.020 / 0.040
G12     203.2          69.0                8.2 +/-    1.02       8.7 +/-    1.02  0.030 / 0.030
G20     198.8          25.1               10.3 +/-    1.17      20.0 +/-    1.17  0.130 / 0.220
G25     296.2          54.4               10.6 +/-    0.66      12.7 +/-    0.66  0.110 / 0.220
G29     310.1          33.0                7.9 +/-    1.74      13.1 +/-    1.74  0.040 / 0.050