PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2017/11/27-13:43:00
G02     54.3           36.7                4.5 +/-    1.43       6.9 +/-    1.43  0.030 / 0.020
G05     75.3           67.7                5.4 +/-    0.36       5.8 +/-    0.36  0.020 / 0.020
G12     188.2          42.3                6.3 +/-    0.99       8.8 +/-    0.99  0.530 / 0.750
G13     135.4          9.8                -6.4 +/-   10.68     -18.1 +/-   10.68  0.410 / 0.340
G20     205.1          49.4                6.8 +/-    0.73       8.6 +/-    0.73  0.050 / 0.060
G21     266.4          16.3                3.9 +/-   10.79       9.4 +/-   10.79  0.040 / 0.050
G25     249.1          56.4                4.9 +/-    1.99       5.8 +/-    1.99  0.070 / 0.050
G29     326.9          51.9                3.5 +/-    1.06       4.3 +/-    1.06  0.050 / 0.050