PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2018/12/14-18:12:50
G08     266.4          18.9                7.8 +/-    2.97      17.6 +/-    2.97  0.120 / 0.270
G10     59.6           58.3                7.6 +/-    0.92       8.8 +/-    0.92  0.130 / 0.280
G11     311.6          17.4                6.6 +/-    1.46      15.6 +/-    1.46  0.030 / 0.030
G14     264.6          66.2                8.6 +/-    1.08       9.3 +/-    1.08  0.030 / 0.030
G18     311.9          33.7                5.9 +/-    1.13       9.6 +/-    1.13  0.060 / 0.050
G20     94.2           37.3                8.4 +/-    1.26      12.7 +/-    1.26  0.050 / 0.050
G21     153.8          13.7                7.9 +/-    1.59      20.2 +/-    1.59  0.150 / 0.270
G27     235.1          17.4                8.6 +/-    2.10      20.1 +/-    2.10  0.310 / 0.240
G31     181.1          26.1                8.7 +/-    2.16      16.7 +/-    2.16  0.130 / 0.180
G32     330.5          74.9                8.1 +/-    0.34       8.4 +/-    0.34  0.100 / 0.170