PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2018/02/18-19:58:10
G03     200.8          46.9               13.5 +/-    0.82      17.7 +/-    0.82  0.080 / 0.110
G07     264.5          20.7               12.8 +/-    2.82      27.8 +/-    2.82  0.090 / 0.110
G09     314.3          35.0                9.9 +/-    1.19      15.7 +/-    1.19  0.030 / 0.040
G16     72.5           62.9               11.8 +/-    0.58      13.1 +/-    0.58  0.030 / 0.030
G22     184.3          31.2               14.3 +/-    1.35      24.4 +/-    1.35  0.150 / 0.170
G23     343.0          69.4               11.1 +/-    0.41      11.7 +/-    0.41  0.130 / 0.200
G26     47.1           35.2                9.7 +/-    0.91      15.4 +/-    0.91  0.040 / 0.050
G27     126.0          17.4               15.6 +/-    2.95      36.7 +/-    2.95  0.040 / 0.050