PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2018/12/27-17:12:50
G08     269.4          20.1                6.7 +/-    2.84      14.6 +/-    2.84  0.100 / 0.170
G10     53.8           59.4                8.7 +/-    0.55      10.0 +/-    0.55  0.170 / 0.220
G11     313.6          15.5               -4.9 +/-   14.75     -12.1 +/-   14.75  0.030 / 0.030
G14     258.2          64.3                9.2 +/-    0.44      10.1 +/-    0.44  0.030 / 0.030
G18     313.3          31.4                8.2 +/-    1.87      14.0 +/-    1.87  0.150 / 0.590
G20     91.1           39.3                9.4 +/-    0.82      13.8 +/-    0.82  0.070 / 0.050
G21     153.0          16.1                9.1 +/-    1.35      22.1 +/-    1.35  0.070 / 0.050
G27     237.8          19.5                8.6 +/-    1.22      19.1 +/-    1.22  0.100 / 0.160
G31     182.1          22.3               10.7 +/-    2.44      22.2 +/-    2.44  0.120 / 0.200
G32     316.1          75.7               11.4 +/-    0.39      11.7 +/-    0.39  0.070 / 0.140