PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2018/10/17-20:12:40
G08     317.7          14.1                8.6 +/-    2.18      21.7 +/-    2.18  0.060 / 0.080
G10     310.7          55.8                8.8 +/-    0.72      10.5 +/-    0.72  0.060 / 0.090
G14     212.6          19.2                9.1 +/-    1.79      20.4 +/-    1.79  0.030 / 0.040
G15     45.8           24.3                8.1 +/-    1.12      16.0 +/-    1.12  0.030 / 0.050
G20     12.1           64.2               10.6 +/-    0.40      11.6 +/-    0.40  0.150 / 0.590
G21     117.8          67.3               10.9 +/-    0.59      11.7 +/-    0.59  0.160 / 0.490
G24     84.7           28.2                9.8 +/-    0.53      17.8 +/-    0.53  0.060 / 0.140
G27     292.4          36.2               10.8 +/-    1.23      16.8 +/-    1.23  0.060 / 0.130
G32     214.4          40.8               12.4 +/-    1.06      17.8 +/-    1.06  0.090 / 0.230