PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2018/05/27-13:12:30
G03     204.9          50.5                7.5 +/-    1.18       9.5 +/-    1.18  0.110 / 0.180
G07     262.6          19.3                9.1 +/-    2.09      20.4 +/-    2.09  0.080 / 0.150
G09     313.8          34.4                7.6 +/-    2.50      12.3 +/-    2.50  0.060 / 0.130
G16     73.5           61.9                7.7 +/-    0.32       8.6 +/-    0.32  0.090 / 0.120
G22     183.5          31.8                8.5 +/-    1.34      14.4 +/-    1.34  0.040 / 0.080
G23     344.6          69.4                5.7 +/-    0.48       6.1 +/-    0.48  0.040 / 0.070
G26     47.7           35.6                6.8 +/-    1.43      10.7 +/-    1.43  0.030 / 0.040
G27     128.6          15.6               11.1 +/-    0.91      27.3 +/-    0.91  0.040 / 0.050