PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2018/12/28-07:57:40
G02     242.3          75.9               10.1 +/-    0.36      10.3 +/-    0.36  0.120 / 0.090
G05     172.6          15.4                7.0 +/-    1.84      17.1 +/-    1.84  0.120 / 0.100
G06     40.1           60.8                8.2 +/-    1.09       9.3 +/-    1.09  0.030 / 0.040
G12     321.2          50.8                7.3 +/-    0.66       9.2 +/-    0.66  0.030 / 0.050
G17     72.1           20.0                6.1 +/-    1.88      13.4 +/-    1.88  0.330 / 0.350
G19     55.4           40.1                8.9 +/-    2.42      12.9 +/-    2.42  0.440 / 0.180
G24     240.3          34.3                7.8 +/-    2.20      12.5 +/-    2.20  0.130 / 0.200
G25     316.6          17.4                4.9 +/-    2.89      11.4 +/-    2.89  0.150 / 0.230