PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2018/05/16-12:28:00
G01     229.8          20.3                6.6 +/-    2.63      14.5 +/-    2.63  0.070 / 0.130
G03     295.0          66.1                5.1 +/-    0.81       5.5 +/-    0.81  0.070 / 0.110
G14     80.2           31.0                5.3 +/-    1.64       9.1 +/-    1.64  0.030 / 0.040
G16     148.3          41.6                7.5 +/-    0.63      10.6 +/-    0.63  0.030 / 0.030
G22     213.6          72.7                7.0 +/-    0.28       7.3 +/-    0.28  0.320 / 0.310
G23     306.5          38.0                4.3 +/-    1.11       6.4 +/-    1.11  0.310 / 0.320
G26     102.1          52.7                6.2 +/-    0.40       7.5 +/-    0.40  0.040 / 0.030
G31     44.3           34.0                4.8 +/-    1.22       7.8 +/-    1.22  0.040 / 0.030