PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2018/05/09-05:28:00
G10     251.2          27.0                6.5 +/-    1.96      12.1 +/-    1.96  0.140 / 0.270
G13     53.1           29.7                6.3 +/-    1.59      11.2 +/-    1.59  0.100 / 0.280
G15     84.4           57.1                6.7 +/-    1.22       7.8 +/-    1.22  0.040 / 0.040
G16     294.3          15.5                3.3 +/-    1.27       8.2 +/-    1.27  0.040 / 0.040
G20     313.0          70.5                4.8 +/-    0.59       5.0 +/-    0.59  0.040 / 0.060
G21     334.3          60.6                4.3 +/-    0.64       4.9 +/-    0.64  0.040 / 0.040
G26     265.8          15.3                6.0 +/-    1.79      14.8 +/-    1.79  0.040 / 0.040
G29     165.3          49.5                6.6 +/-    0.62       8.4 +/-    0.62  0.040 / 0.040