PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2018/12/26-20:12:50
G01     252.0          36.1                6.9 +/-    1.81      10.8 +/-    1.81  0.060 / 0.110
G03     316.3          42.9                5.7 +/-    2.64       8.0 +/-    2.64  0.070 / 0.110
G11     236.6          12.2                7.5 +/-    3.62      20.1 +/-    3.62  0.050 / 0.090
G14     59.7           40.8                7.5 +/-    1.05      10.8 +/-    1.05  0.060 / 0.080
G18     217.8          26.9                8.4 +/-    1.51      15.7 +/-    1.51  0.050 / 0.100
G22     305.7          65.1                7.6 +/-    0.67       8.3 +/-    0.67  0.050 / 0.100
G23     285.1          17.1                9.0 +/-    3.14      21.3 +/-    3.14  0.110 / 0.780
G26     140.7          36.2               14.5 +/-    0.57      22.5 +/-    0.57  0.170 / 0.490
G31     40.9           64.4                7.8 +/-    0.58       8.5 +/-    0.58  0.040 / 0.040
G32     75.8           24.5                9.7 +/-    0.86      19.2 +/-    0.86  0.040 / 0.050