PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2018/12/12-17:57:50
G08     276.9          22.4                9.0 +/-    1.14      18.7 +/-    1.14  0.240 / 0.400
G10     38.6           61.6                8.0 +/-    0.41       8.9 +/-    0.41  0.270 / 0.430
G14     245.3          58.7               10.4 +/-    0.99      12.0 +/-    0.99  0.140 / 0.150
G18     316.1          24.5                7.0 +/-    2.28      13.9 +/-    2.28  0.120 / 0.150
G20     82.9           44.1                8.9 +/-    1.46      12.2 +/-    1.46  0.050 / 0.030
G21     151.4          24.0               10.9 +/-    3.76      21.9 +/-    3.76  0.030 / 0.030
G24     43.2           14.6                7.0 +/-    2.83      17.6 +/-    2.83  0.090 / 0.190
G27     243.8          24.2               10.2 +/-    1.83      20.2 +/-    1.83  0.080 / 0.140
G31     183.0          15.9               10.7 +/-    1.67      26.0 +/-    1.67  0.070 / 0.050
G32     285.4          75.3                9.1 +/-    0.48       9.4 +/-    0.48  0.070 / 0.050