PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2017/12/08-19:12:40
G08     278.8          21.7                8.8 +/-    1.90      18.7 +/-    1.90  0.060 / 0.160
G10     36.6           62.3                8.2 +/-    1.03       9.2 +/-    1.03  0.090 / 0.110
G14     246.1          58.4                9.7 +/-    0.63      11.2 +/-    0.63  0.160 / 0.280
G18     81.1           42.1                8.1 +/-    1.41      11.5 +/-    1.41  0.140 / 0.250
G21     150.5          21.6               10.1 +/-    1.78      21.3 +/-    1.78  0.220 / 0.120
G24     46.2           19.1                6.7 +/-    3.51      15.2 +/-    3.51  0.260 / 0.180
G27     239.7          23.2               10.4 +/-    1.76      21.2 +/-    1.76  0.060 / 0.040
G31     182.0          17.2               10.7 +/-    1.52      25.2 +/-    1.52  0.050 / 0.050
G32     286.0          75.0                8.3 +/-    0.33       8.6 +/-    0.33  0.110 / 0.280