PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2018/10/28-14:43:10
G02     50.5           40.7                4.2 +/-    1.80       6.1 +/-    1.80  0.050 / 0.050
G05     86.4           70.6                7.1 +/-    0.64       7.4 +/-    0.64  0.050 / 0.050
G12     185.6          42.3                8.1 +/-    0.52      11.4 +/-    0.52  0.050 / 0.050
G21     264.3          12.3                3.8 +/-    6.18      10.1 +/-    6.18  0.050 / 0.050
G25     245.8          57.5                7.1 +/-    1.22       8.3 +/-    1.22  0.230 / 0.440
G29     322.3          45.8                6.3 +/-    0.70       8.4 +/-    0.70  0.260 / 0.460