PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2017/11/04-16:57:50
G05     45.5           28.6                7.6 +/-    0.78      13.7 +/-    0.78  0.040 / 0.090
G13     92.7           35.9               10.9 +/-    0.72      17.0 +/-    0.72  0.080 / 0.110
G15     137.6          43.7               13.5 +/-    0.40      18.5 +/-    0.40  0.050 / 0.090
G18     235.9          33.8               11.8 +/-    2.28      19.2 +/-    2.28  0.050 / 0.110
G20     7.4            78.9               10.1 +/-    0.71      10.3 +/-    0.71  0.040 / 0.040
G21     304.5          42.4               11.1 +/-    0.80      15.5 +/-    0.80  0.040 / 0.040
G25     204.4          19.5               11.9 +/-    1.81      26.5 +/-    1.81  0.090 / 0.180
G26     303.3          17.8                9.8 +/-    0.76      22.7 +/-    0.76  0.110 / 0.180
G29     134.8          78.2               11.8 +/-    0.90      12.1 +/-    0.90  0.090 / 0.260