PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2019/09/09-18:57:50
G02     90.3           9.7                12.9 +/-    2.22      36.3 +/-    2.22  0.100 / 0.090
G05     46.0           25.3               10.4 +/-    2.01      20.2 +/-    2.01  0.090 / 0.110
G13     85.1           35.0               13.7 +/-    1.68      21.7 +/-    1.68  0.090 / 0.130
G15     137.0          46.3               15.1 +/-    0.55      20.0 +/-    0.55  0.090 / 0.120
G20     241.7          31.5               14.8 +/-    1.58      25.1 +/-    1.58  0.030 / 0.050
G21     305.6          40.9               11.4 +/-    0.94      16.3 +/-    0.94  0.030 / 0.060
G25     204.3          18.4               15.6 +/-    3.68      35.7 +/-    3.68  0.260 / 0.310
G26     295.8          20.0                9.7 +/-    1.63      21.4 +/-    1.63  0.200 / 0.310
G29     137.5          82.2               12.9 +/-    0.43      13.0 +/-    0.43  0.110 / 0.330