PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2017/11/22-11:12:50
G02     230.3          72.9                9.0 +/-    0.49       9.4 +/-    0.49  0.100 / 0.270
G05     174.6          11.3               -1.9 +/-   13.68      -5.1 +/-   13.68  0.170 / 0.350
G06     42.5           67.8                6.2 +/-    0.37       6.6 +/-    0.37  0.060 / 0.090
G12     321.0          45.7                5.8 +/-    1.10       7.8 +/-    1.10  0.060 / 0.080
G17     68.2           23.8                6.1 +/-    1.19      12.1 +/-    1.19  0.030 / 0.040
G19     53.8           40.4                6.1 +/-    1.45       8.8 +/-    1.45  0.030 / 0.050
G24     252.4          37.5                6.8 +/-    1.39      10.3 +/-    1.39  0.070 / 0.070