PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2018/05/09-02:57:30
G02     61.7           30.5                8.7 +/-    1.72      15.0 +/-    1.72  0.110 / 0.080
G05     54.8           58.0                9.1 +/-    0.35      10.5 +/-    0.35  0.060 / 0.100
G12     184.3          30.5               10.3 +/-    1.39      17.8 +/-    1.39  0.030 / 0.030
G13     127.0          16.4               10.5 +/-    1.84      25.3 +/-    1.84  0.030 / 0.040
G15     162.6          13.7                8.6 +/-    3.31      22.1 +/-    3.31  0.150 / 0.210
G20     218.7          21.1               11.7 +/-    3.78      25.0 +/-    3.78  0.130 / 0.180
G21     272.7          18.2               11.4 +/-    1.78      26.1 +/-    1.78  0.060 / 0.060
G25     235.4          50.7               11.2 +/-    3.11      14.1 +/-    3.11  0.070 / 0.060
G29     329.0          55.7               11.5 +/-    0.46      13.7 +/-    0.46  0.040 / 0.030