PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2018/05/27-03:58:10
G10     245.6          22.2               13.4 +/-    1.55      27.9 +/-    1.55  0.190 / 0.590
G13     59.7           33.1                6.9 +/-    0.60      11.3 +/-    0.60  0.160 / 0.450
G15     99.6           57.7                9.0 +/-    0.40      10.4 +/-    0.40  0.040 / 0.050
G16     300.8          15.6                7.0 +/-    2.12      17.0 +/-    2.12  0.050 / 0.050
G20     274.4          60.5               11.1 +/-    0.98      12.5 +/-    0.98  0.090 / 0.220
G21     326.0          55.6                8.6 +/-    0.57      10.1 +/-    0.57  0.120 / 0.270
G26     272.3          17.9               10.6 +/-    0.98      24.6 +/-    0.98  0.050 / 0.130
G29     163.3          57.6                9.1 +/-    0.80      10.5 +/-    0.80  0.050 / 0.130