PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2018/10/21-18:28:10
G10     259.8          34.0               11.0 +/-    1.72      17.7 +/-    1.72  0.170 / 0.340
G13     45.7           23.2               10.0 +/-    1.61      20.4 +/-    1.61  0.150 / 0.320
G15     72.4           56.4               11.4 +/-    0.27      13.4 +/-    0.27  0.060 / 0.050
G16     285.8          14.1                8.5 +/-    2.04      21.6 +/-    2.04  0.070 / 0.040
G20     285.0          56.8               12.2 +/-    1.14      14.3 +/-    1.14  0.180 / 0.480
G21     350.7          67.7               11.7 +/-    0.51      12.6 +/-    0.51  0.220 / 0.360
G24     123.0          10.5               -8.2 +/-   42.88     -22.6 +/-   42.88  0.170 / 0.440
G26     259.5          11.2                9.8 +/-    1.91      26.8 +/-    1.91  0.140 / 0.300
G27     321.8          11.8                3.7 +/-   29.12      10.0 +/-   29.12  0.070 / 0.230
G29     166.6          38.7               13.9 +/-    1.19      20.7 +/-    1.19  0.070 / 0.240