PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2018/09/17-14:58:20
G02     241.8          72.8                9.1 +/-    0.60       9.5 +/-    0.60  0.080 / 0.240
G05     173.3          15.7               10.6 +/-    1.27      26.1 +/-    1.27  0.090 / 0.220
G06     40.4           55.7                8.1 +/-    0.58       9.6 +/-    0.58  0.090 / 0.100
G12     322.3          56.9                7.9 +/-    0.71       9.3 +/-    0.71  0.100 / 0.130
G17     72.9           20.1                7.6 +/-    1.43      16.7 +/-    1.43  0.030 / 0.050
G19     54.8           41.5                7.8 +/-    0.43      11.1 +/-    0.43  0.030 / 0.060
G24     240.6          33.6                9.7 +/-    0.91      15.8 +/-    0.91  0.120 / 0.380
G25     316.9          15.6                5.4 +/-    2.16      13.2 +/-    2.16  0.140 / 0.440