PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2018/05/09-04:57:40
G10     240.8          17.3                7.5 +/-    2.06      17.7 +/-    2.06  0.090 / 0.390
G13     67.4           35.4                5.5 +/-    0.56       8.6 +/-    0.56  0.110 / 0.390
G15     111.8          55.9                6.5 +/-    0.32       7.7 +/-    0.32  0.140 / 0.260
G16     307.4          14.6                3.3 +/-    3.03       8.3 +/-    3.03  0.160 / 0.340
G20     275.3          65.8                4.8 +/-    0.97       5.3 +/-    0.97  0.030 / 0.040
G21     319.5          51.3                5.6 +/-    1.23       7.0 +/-    1.23  0.040 / 0.040
G26     279.0          19.7                4.9 +/-    1.54      10.9 +/-    1.54  0.050 / 0.060
G29     160.5          64.9                5.5 +/-    1.24       6.0 +/-    1.24  0.040 / 0.080