PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2017/10/06-18:27:50
G02     78.9           17.2               16.8 +/-    2.11      39.5 +/-    2.11  0.130 / 0.260
G05     44.7           41.9               17.1 +/-    1.29      24.1 +/-    1.29  0.060 / 0.140
G13     108.1          30.5               19.3 +/-    1.06      33.4 +/-    1.06  0.060 / 0.110
G15     149.3          32.3               21.4 +/-    1.42      35.7 +/-    1.42  0.110 / 0.160
G18     227.5          22.3               19.0 +/-    1.28      39.6 +/-    1.28  0.100 / 0.120
G20     264.9          84.9               17.0 +/-    0.75      17.1 +/-    0.75  0.040 / 0.040
G21     292.1          33.5               14.7 +/-    0.91      24.0 +/-    0.91  0.040 / 0.060
G25     210.7          30.2               17.8 +/-    0.90      31.0 +/-    0.90  0.050 / 0.050
G26     314.6          13.3              -19.6 +/-   25.89     -50.7 +/-   25.89  0.050 / 0.060
G29     16.2           83.1               14.9 +/-    0.59      15.0 +/-    0.59  0.130 / 0.230