PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2018/05/14-02:27:50
G02     58.2           33.4                7.6 +/-    2.29      12.4 +/-    2.29  0.060 / 0.080
G05     60.4           61.6                8.5 +/-    0.43       9.5 +/-    0.43  0.060 / 0.090
G12     185.0          34.8               11.8 +/-    0.85      18.8 +/-    0.85  0.030 / 0.030
G13     130.2          13.6               11.3 +/-    2.81      29.2 +/-    2.81  0.030 / 0.040
G15     165.0          10.4               -5.2 +/-   16.91     -14.5 +/-   16.91  0.090 / 0.350
G20     217.3          14.7               11.9 +/-    1.89      29.7 +/-    1.89  0.190 / 0.390
G21     269.3          15.5                8.9 +/-    1.27      21.9 +/-    1.27  0.210 / 0.290
G25     241.7          53.5               11.0 +/-    3.35      13.4 +/-    3.35  0.240 / 0.400
G29     326.3          51.6               10.3 +/-    1.11      12.7 +/-    1.11  0.060 / 0.050