PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2018/12/31-16:27:30
G08     282.8          23.4                8.5 +/-    1.62      17.2 +/-    1.62  0.040 / 0.030
G10     26.7           62.5                8.9 +/-    2.19       9.9 +/-    2.19  0.050 / 0.030
G14     238.0          54.3               10.1 +/-    2.62      12.2 +/-    2.62  0.070 / 0.140
G18     317.0          20.1                6.3 +/-    1.79      13.9 +/-    1.79  0.080 / 0.120
G20     76.2           47.5               10.8 +/-    0.69      14.0 +/-    0.69  0.100 / 0.120
G21     149.3          28.5               11.8 +/-    1.06      21.4 +/-    1.06  0.120 / 0.100
G24     46.9           18.5                8.5 +/-    1.33      19.5 +/-    1.33  0.080 / 0.130
G27     249.3          27.6                8.6 +/-    1.64      15.8 +/-    1.64  0.090 / 0.160
G32     263.9          72.2                9.1 +/-    0.62       9.5 +/-    0.62  0.120 / 0.120