PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2017/12/24-13:58:10
G05     48.8           17.0                3.2 +/-    1.73       7.5 +/-    1.73  0.080 / 0.170
G10     236.1          11.6               -7.8 +/-   29.06     -21.0 +/-   29.06  0.110 / 0.120
G13     77.2           37.1                5.9 +/-    0.79       9.0 +/-    0.79  0.050 / 0.030
G15     121.7          52.2                9.1 +/-    0.63      11.2 +/-    0.63  0.040 / 0.030
G18     246.2          44.1                6.3 +/-    2.70       8.5 +/-    2.70  0.110 / 0.280
G20     22.2           69.5                5.7 +/-    0.53       6.0 +/-    0.53  0.140 / 0.250
G21     317.2          50.9                5.4 +/-    0.86       6.8 +/-    0.86  0.080 / 0.060
G25     199.5          10.8                3.5 +/-    2.86       9.6 +/-    2.86  0.060 / 0.070
G26     289.6          19.8                4.1 +/-    1.05       9.1 +/-    1.05  0.170 / 0.490
G29     153.1          68.4                8.5 +/-    0.56       9.1 +/-    0.56  0.130 / 0.290