PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2017/08/13-22:58:10
G05     47.6           22.5                7.7 +/-    0.41      16.0 +/-    0.41  0.110 / 0.270
G13     80.3           37.5               11.8 +/-    1.35      17.9 +/-    1.35  0.170 / 0.300
G15     130.0          50.3               10.6 +/-    2.99      13.3 +/-    2.99  0.270 / 0.420
G16     317.6          10.4               -5.7 +/-   15.44     -15.8 +/-   15.44  0.240 / 0.370
G18     243.2          39.6              -59.8 +/-   48.20     -87.5 +/-   48.20  0.040 / 0.090
G20     27.6           67.4               10.5 +/-    0.84      11.3 +/-    0.84  0.040 / 0.090
G21     310.9          45.9               11.2 +/-    1.31      14.9 +/-    1.31  0.030 / 0.040
G25     196.8          9.9                13.1 +/-    6.36      36.5 +/-    6.36  0.040 / 0.040
G26     291.8          19.8               11.9 +/-    2.57      26.4 +/-    2.57  0.070 / 0.130
G29     152.8          71.9               10.4 +/-    0.83      10.8 +/-    0.83  0.080 / 0.150