PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2017/11/12-15:12:40
G02     64.1           28.4               10.2 +/-    1.24      18.5 +/-    1.24  0.030 / 0.030
G05     53.6           58.7                9.2 +/-    0.62      10.5 +/-    0.62  0.030 / 0.030
G12     185.2          28.6               13.4 +/-    1.46      24.1 +/-    1.46  0.190 / 0.230
G13     125.9          18.3               13.7 +/-    2.64      31.4 +/-    2.64  0.170 / 0.200
G15     160.3          16.2               13.9 +/-    1.42      33.5 +/-    1.42  0.070 / 0.100
G20     211.6          63.9               12.2 +/-    0.66      13.5 +/-    0.66  0.060 / 0.100
G21     276.4          23.4                8.5 +/-    1.28      17.3 +/-    1.28  0.040 / 0.030
G25     228.8          48.0               11.2 +/-    2.93      14.5 +/-    2.93  0.040 / 0.030
G29     338.0          64.7                8.0 +/-    0.79       8.8 +/-    0.79  0.080 / 0.190