PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2017/09/10-18:13:10
G02     34.3           54.8               15.5 +/-    0.51      18.5 +/-    0.51  0.030 / 0.040
G05     146.2          62.2               16.8 +/-    0.52      18.7 +/-    0.52  0.030 / 0.040
G06     55.1           14.8               12.3 +/-    1.08      30.7 +/-    1.08  0.030 / 0.050
G12     197.2          65.2               14.5 +/-    1.21      15.8 +/-    1.21  0.040 / 0.060
G20     198.4          29.2               19.4 +/-    1.24      34.6 +/-    1.24  0.120 / 0.170
G25     288.9          57.6               16.0 +/-    1.10      18.6 +/-    1.10  0.120 / 0.190
G29     310.7          32.8               14.1 +/-    0.92      23.3 +/-    0.92  0.130 / 0.320