PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2017/09/11-20:12:50
G02     79.4           17.3               15.1 +/-    2.20      35.6 +/-    2.20  0.090 / 0.110
G05     44.5           42.2               16.9 +/-    1.01      23.8 +/-    1.01  0.120 / 0.160
G13     107.0          31.2               20.8 +/-    2.67      35.6 +/-    2.67  0.050 / 0.120
G15     149.3          33.0               20.5 +/-    1.13      33.8 +/-    1.13  0.050 / 0.120
G18     228.1          22.7               19.7 +/-    2.31      40.6 +/-    2.31  0.120 / 0.410
G20     288.4          86.0               18.0 +/-    0.63      18.0 +/-    0.63  0.100 / 0.290
G21     292.6          33.5               14.9 +/-    1.15      24.3 +/-    1.15  0.030 / 0.040
G25     209.0          28.6               20.3 +/-    1.40      36.6 +/-    1.40  0.030 / 0.030
G26     312.7          14.6               10.6 +/-    3.11      26.6 +/-    3.11  0.050 / 0.050
G29     13.3           83.5               18.6 +/-    0.33      18.7 +/-    0.33  0.050 / 0.060