PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2019/05/09-22:57:40
G02     250.7          78.1               11.6 +/-    0.34      11.9 +/-    0.34  0.050 / 0.040
G05     170.1          18.6               17.1 +/-    2.62      39.1 +/-    2.62  0.040 / 0.050
G06     39.5           58.5               13.5 +/-    0.68      15.6 +/-    0.68  0.100 / 0.160
G12     320.8          51.3               10.8 +/-    1.59      13.4 +/-    1.59  0.080 / 0.130
G17     72.4           20.8               12.5 +/-    1.28      27.0 +/-    1.28  0.100 / 0.290
G19     59.2           36.7               13.1 +/-    1.60      20.2 +/-    1.60  0.140 / 0.270
G24     242.0          33.3               13.7 +/-    2.22      22.5 +/-    2.22  0.090 / 0.150
G25     316.7          14.3                7.3 +/-    1.78      18.5 +/-    1.78  0.110 / 0.130