PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2018/08/25-19:28:00
G02     58.0           35.0               11.6 +/-    0.71      18.4 +/-    0.71  0.020 / 0.040
G05     58.7           61.8               12.8 +/-    0.56      14.4 +/-    0.56  0.030 / 0.040
G12     181.2          28.9               15.9 +/-    1.03      28.6 +/-    1.03  0.270 / 0.360
G13     127.8          15.2               16.4 +/-    1.56      40.6 +/-    1.56  0.140 / 0.300
G15     166.7          10.5               -5.1 +/-   26.22     -13.9 +/-   26.22  0.080 / 0.090
G21     270.9          16.3               15.2 +/-    2.23      36.6 +/-    2.23  0.070 / 0.080
G25     234.9          51.8               14.7 +/-    2.43      18.1 +/-    2.43  0.060 / 0.110
G29     327.3          53.1               12.3 +/-    0.59      15.0 +/-    0.59  0.060 / 0.090