PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2018/05/08-14:12:40
G03     211.4          57.9                9.5 +/-    1.29      11.0 +/-    1.29  0.150 / 0.440
G07     256.3          14.3                7.5 +/-    1.11      19.0 +/-    1.11  0.160 / 0.430
G09     309.9          27.3                6.6 +/-    1.88      12.3 +/-    1.88  0.060 / 0.080
G14     107.9          10.2                8.8 +/-    1.84      24.4 +/-    1.84  0.080 / 0.080
G16     94.0           63.9                9.7 +/-    1.23      10.7 +/-    1.23  0.080 / 0.330
G22     184.6          39.1                8.9 +/-    1.35      13.1 +/-    1.35  0.060 / 0.330
G23     335.9          63.4                9.0 +/-    0.39      10.0 +/-    0.39  0.030 / 0.040
G26     53.1           42.1                8.5 +/-    1.39      12.0 +/-    1.39  0.040 / 0.050
G27     134.4          10.3               -5.9 +/-   31.14     -16.5 +/-   31.14  0.030 / 0.040