PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2018/05/08-13:42:30
G03     236.9          68.7                7.8 +/-    0.35       8.4 +/-    0.35  0.090 / 0.220
G09     302.6          17.0                4.6 +/-    2.04      11.0 +/-    2.04  0.090 / 0.260
G14     97.3           19.0                7.2 +/-    0.97      16.2 +/-    0.97  0.060 / 0.070
G16     125.7          58.5                8.6 +/-    0.57       9.9 +/-    0.57  0.060 / 0.060
G22     189.5          53.4                9.4 +/-    0.78      11.3 +/-    0.78  0.050 / 0.080
G23     322.5          52.4                8.4 +/-    0.94      10.3 +/-    0.94  0.060 / 0.070
G26     68.7           50.8                7.2 +/-    0.25       9.0 +/-    0.25  0.040 / 0.040
G31     52.3           18.6                5.4 +/-    0.72      12.3 +/-    0.72  0.040 / 0.040