PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2018/12/28-07:57:30
G02     242.3          75.9                8.9 +/-    0.76       9.1 +/-    0.76  0.090 / 0.080
G05     172.6          15.4                7.7 +/-    3.39      19.1 +/-    3.39  0.080 / 0.100
G06     40.1           60.8                7.5 +/-    0.19       8.4 +/-    0.19  0.110 / 0.210
G12     321.2          50.8                6.7 +/-    0.77       8.3 +/-    0.77  0.090 / 0.160
G17     72.1           20.0                7.2 +/-    0.96      15.9 +/-    0.96  0.030 / 0.040
G19     55.4           40.1                8.0 +/-    0.75      11.6 +/-    0.75  0.030 / 0.040
G24     240.3          34.3                6.8 +/-    2.77      11.0 +/-    2.77  0.040 / 0.050
G25     316.6          17.4                5.8 +/-    2.11      13.6 +/-    2.11  0.050 / 0.060