PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2017/10/02-19:13:00
G05     45.3           30.2               14.2 +/-    0.78      24.8 +/-    0.78  0.110 / 0.380
G13     93.0           36.0               17.0 +/-    1.47      26.5 +/-    1.47  0.110 / 0.370
G15     138.7          43.4               18.8 +/-    0.85      26.0 +/-    0.85  0.080 / 0.210
G18     235.7          33.1               16.3 +/-    0.85      26.8 +/-    0.85  0.090 / 0.170
G20     11.8           78.1               15.1 +/-    0.43      15.4 +/-    0.43  0.050 / 0.080
G21     303.4          41.2               15.3 +/-    0.84      21.8 +/-    0.84  0.050 / 0.080
G25     203.4          18.9               16.2 +/-    2.88      36.6 +/-    2.88  0.060 / 0.130
G26     303.3          17.8               13.5 +/-    0.94      31.4 +/-    0.94  0.060 / 0.120
G29     134.4          80.0               16.7 +/-    0.58      16.9 +/-    0.58  0.040 / 0.050