PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2018/05/02-08:28:10
G08     305.6          19.5                6.1 +/-    1.38      13.6 +/-    1.38  0.070 / 0.180
G10     347.0          61.8                3.8 +/-    0.71       4.3 +/-    0.71  0.090 / 0.230
G14     222.9          33.8                6.5 +/-    2.27      10.5 +/-    2.27  0.060 / 0.110
G20     77.3           32.8                5.7 +/-    0.96       9.4 +/-    0.96  0.060 / 0.110
G21     140.9          49.7                7.3 +/-    1.18       9.2 +/-    1.18  0.060 / 0.120
G24     65.3           28.8                4.2 +/-    0.67       7.5 +/-    0.67  0.050 / 0.120
G27     264.4          35.5                6.9 +/-    1.04      10.8 +/-    1.04  0.030 / 0.040
G32     231.8          61.5                8.6 +/-    0.73       9.6 +/-    0.73  0.030 / 0.030