PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2018/12/25-02:27:40
G01     126.5          11.8               -9.4 +/-   33.98     -25.2 +/-   33.98  0.040 / 0.030
G07     61.2           68.1                5.0 +/-    0.31       5.4 +/-    0.31  0.030 / 0.030
G08     48.7           36.6                3.4 +/-    1.51       5.3 +/-    1.51  0.090 / 0.150
G09     176.6          34.0                6.1 +/-    1.20       9.9 +/-    1.20  0.080 / 0.110
G11     115.5          36.1                6.5 +/-    1.08      10.1 +/-    1.08  0.120 / 0.220
G13     320.8          12.6               -5.8 +/-    9.02     -15.3 +/-    9.02  0.110 / 0.260
G17     198.8          17.8                5.5 +/-    0.84      12.8 +/-    0.84  0.090 / 0.440
G18     99.5           16.8                7.1 +/-    1.14      16.9 +/-    1.14  0.110 / 0.320
G28     274.4          51.5                5.8 +/-    3.24       7.1 +/-    3.24  0.310 / 0.350
G30     331.7          60.1                3.2 +/-    0.75       3.7 +/-    0.75  0.270 / 0.350