PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2019/09/16-18:28:10
G05     45.9           25.7                9.2 +/-    1.45      17.7 +/-    1.45  0.120 / 0.360
G13     85.3           34.9               11.1 +/-    0.55      17.7 +/-    0.55  0.120 / 0.390
G15     136.0          46.4               13.1 +/-    1.24      17.3 +/-    1.24  0.040 / 0.100
G20     241.6          31.6               12.9 +/-    2.50      21.9 +/-    2.50  0.050 / 0.110
G21     305.4          40.9               10.7 +/-    1.19      15.4 +/-    1.19  0.060 / 0.110
G25     204.3          18.5               13.3 +/-    1.88      30.4 +/-    1.88  0.060 / 0.130
G26     296.0          20.0               10.3 +/-    1.58      22.7 +/-    1.58  0.040 / 0.050
G29     136.8          82.5               11.3 +/-    0.55      11.4 +/-    0.55  0.030 / 0.050