PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2018/12/12-17:42:30
G08     284.1          23.6               10.0 +/-    1.12      20.3 +/-    1.12  0.050 / 0.170
G10     23.8           62.7                7.8 +/-    0.60       8.7 +/-    0.60  0.050 / 0.160
G14     236.5          53.0               10.1 +/-    1.55      12.2 +/-    1.55  0.030 / 0.040
G18     317.2          18.4                7.8 +/-    1.35      17.9 +/-    1.35  0.030 / 0.030
G20     74.6           48.3                8.2 +/-    0.59      10.5 +/-    0.59  0.080 / 0.120
G21     149.0          30.6               11.0 +/-    2.14      19.0 +/-    2.14  0.090 / 0.120
G24     47.5           18.8                6.8 +/-    1.27      15.5 +/-    1.27  0.070 / 0.080
G27     250.2          28.3                9.5 +/-    1.49      17.2 +/-    1.49  0.070 / 0.060
G32     261.2          72.0                9.6 +/-    0.57      10.0 +/-    0.57  0.080 / 0.140