PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2018/05/19-13:28:10
G03     211.7          57.7               10.7 +/-    0.61      12.4 +/-    0.61  0.070 / 0.170
G07     256.7          14.6                8.4 +/-    2.08      21.0 +/-    2.08  0.150 / 0.190
G09     310.2          27.9                6.2 +/-    1.33      11.3 +/-    1.33  0.080 / 0.330
G14     108.1          10.3                6.0 +/-    2.55      16.5 +/-    2.55  0.090 / 0.360
G16     92.4           63.8                9.1 +/-    0.45      10.0 +/-    0.45  0.030 / 0.040
G22     185.1          39.1                9.5 +/-    2.52      14.0 +/-    2.52  0.040 / 0.050
G23     335.4          63.3                8.2 +/-    0.67       9.1 +/-    0.67  0.040 / 0.050
G26     52.7           41.7                8.4 +/-    0.78      11.8 +/-    0.78  0.040 / 0.060
G27     134.1          10.5               -9.8 +/-   31.95     -27.0 +/-   31.95  0.060 / 0.100