PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2018/05/16-23:27:30
G02     249.9          78.2               13.4 +/-    0.68      13.7 +/-    0.68  0.050 / 0.050
G05     170.0          18.8               22.3 +/-    2.22      50.4 +/-    2.22  0.050 / 0.060
G06     40.3           55.5               12.4 +/-    0.71      14.7 +/-    0.71  0.060 / 0.230
G12     321.6          54.8               11.8 +/-    0.93      14.1 +/-    0.93  0.060 / 0.200
G17     71.3           23.7               11.8 +/-    0.51      23.8 +/-    0.51  0.030 / 0.030
G19     58.2           38.5               12.2 +/-    0.70      18.1 +/-    0.70  0.030 / 0.040
G24     242.7          33.5               17.0 +/-    1.19      27.8 +/-    1.19  0.060 / 0.090
G25     317.0          13.5               10.1 +/-    1.57      26.2 +/-    1.57  0.050 / 0.080