PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2017/12/29-10:42:30
G02     37.0           52.3                5.8 +/-    1.06       7.1 +/-    1.06  0.040 / 0.050
G05     135.4          63.7                7.2 +/-    0.39       7.9 +/-    0.39  0.040 / 0.050
G06     53.5           19.0                3.6 +/-    2.99       8.2 +/-    2.99  0.030 / 0.030
G12     201.0          66.8                6.7 +/-    0.45       7.3 +/-    0.45  0.040 / 0.030
G20     200.1          25.5                5.8 +/-    2.68      11.2 +/-    2.68  0.110 / 0.170
G25     294.1          54.6                5.5 +/-    2.30       6.6 +/-    2.30  0.190 / 0.210
G29     310.4          32.4                4.0 +/-    1.32       6.7 +/-    1.32  0.030 / 0.030