PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2018/05/22-04:12:40
G10     243.4          20.1               10.4 +/-    2.90      22.7 +/-    2.90  0.100 / 0.290
G13     63.0           34.2                6.3 +/-    1.35      10.2 +/-    1.35  0.090 / 0.340
G15     105.3          57.2                8.6 +/-    0.64      10.0 +/-    0.64  0.030 / 0.040
G16     303.7          15.3                5.5 +/-    1.28      13.6 +/-    1.28  0.050 / 0.040
G20     272.5          61.3                8.4 +/-    0.70       9.4 +/-    0.70  0.070 / 0.120
G21     323.0          53.6                7.9 +/-    0.61       9.5 +/-    0.61  0.060 / 0.110
G26     275.2          18.8                7.9 +/-    1.03      17.9 +/-    1.03  0.170 / 0.260
G29     162.2          60.9                8.2 +/-    0.49       9.2 +/-    0.49  0.100 / 0.310