PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2018/12/30-17:13:10
G08     263.6          17.7                9.5 +/-    1.64      22.2 +/-    1.64  0.280 / 0.410
G10     65.1           57.1               10.3 +/-    0.47      12.1 +/-    0.47  0.310 / 0.560
G11     309.5          19.2                8.6 +/-    1.60      19.3 +/-    1.60  0.030 / 0.030
G14     271.8          67.9               10.5 +/-    0.61      11.2 +/-    0.61  0.030 / 0.030
G18     309.9          36.6                8.3 +/-    1.66      12.8 +/-    1.66  0.160 / 0.270
G20     97.1           35.3               10.1 +/-    0.54      15.9 +/-    0.54  0.130 / 0.310
G21     154.0          10.2               13.6 +/-    5.28      37.7 +/-    5.28  0.070 / 0.050
G27     233.1          15.5                9.6 +/-    1.52      23.6 +/-    1.52  0.060 / 0.050
G31     181.3          28.2               12.9 +/-    1.90      23.5 +/-    1.90  0.100 / 0.190
G32     339.2          73.7               11.1 +/-    0.37      11.5 +/-    0.37  0.090 / 0.150