PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2017/07/27-22:12:30
G02     53.6           39.0               10.0 +/-    0.72      14.8 +/-    0.72  0.100 / 0.330
G05     72.1           68.0                9.3 +/-    0.56      10.0 +/-    0.56  0.160 / 0.390
G12     185.2          36.6               12.5 +/-    2.37      19.2 +/-    2.37  0.040 / 0.100
G13     133.4          11.8               14.5 +/-    3.62      38.9 +/-    3.62  0.040 / 0.090
G20     204.2          56.2               12.2 +/-    0.74      14.4 +/-    0.74  0.040 / 0.060
G21     267.0          14.2               11.5 +/-    2.67      29.3 +/-    2.67  0.040 / 0.060
G25     235.9          54.4               11.1 +/-    1.07      13.3 +/-    1.07  0.040 / 0.030
G29     326.2          51.6                9.9 +/-    0.96      12.3 +/-    0.96  0.030 / 0.040