PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2018/08/20-16:43:10
G02     232.9          70.2                7.7 +/-    1.24       8.1 +/-    1.24  0.090 / 0.220
G05     173.4          13.2               10.7 +/-    3.22      27.9 +/-    3.22  0.070 / 0.250
G06     41.9           59.0                8.3 +/-    0.25       9.6 +/-    0.25  0.080 / 0.090
G12     322.9          54.0                7.6 +/-    1.75       9.1 +/-    1.75  0.090 / 0.090
G17     69.3           22.7                7.5 +/-    1.11      15.4 +/-    1.11  0.030 / 0.060
G19     50.9           43.5                7.6 +/-    0.71      10.4 +/-    0.71  0.050 / 0.050
G24     246.3          36.3               10.8 +/-    1.55      16.7 +/-    1.55  0.050 / 0.040
G25     316.0          10.6              -13.2 +/-   31.10     -36.4 +/-   31.10  0.070 / 0.050