PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2017/08/08-21:27:50
G02     55.5           37.2               11.1 +/-    0.94      16.9 +/-    0.94  0.110 / 0.430
G05     68.9           67.5               12.0 +/-    0.42      12.8 +/-    0.42  0.120 / 0.410
G12     185.2          35.0               16.8 +/-    1.30      26.7 +/-    1.30  0.040 / 0.090
G13     132.1          13.0               17.3 +/-    2.27      45.1 +/-    2.27  0.050 / 0.090
G20     205.2          58.0               15.9 +/-    1.03      18.4 +/-    1.03  0.040 / 0.050
G21     268.5          15.5               15.5 +/-    1.18      38.0 +/-    1.18  0.040 / 0.060
G25     232.9          53.1               13.6 +/-    1.06      16.5 +/-    1.06  0.030 / 0.060
G29     327.8          53.7               11.5 +/-    0.75      13.9 +/-    0.75  0.040 / 0.050