PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2017/08/09-18:57:30
G02     280.6          80.0               14.0 +/-    0.73      14.2 +/-    0.73  0.040 / 0.020
G05     170.8          23.6               15.3 +/-    0.77      30.9 +/-    0.77  0.030 / 0.020
G06     40.5           47.1               10.6 +/-    0.69      13.9 +/-    0.69  0.100 / 0.130
G12     318.8          64.7               10.3 +/-    0.40      11.3 +/-    0.40  0.080 / 0.140
G19     69.9           29.9                9.5 +/-    1.68      16.6 +/-    1.68  0.030 / 0.040
G24     236.1          28.3               13.0 +/-    0.89      23.5 +/-    0.89  0.030 / 0.040
G25     317.7          27.0               10.2 +/-    2.74      19.0 +/-    2.74  0.130 / 0.170