PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2019/10/17-18:42:40
G10     290.6          50.4                9.7 +/-    0.61      12.2 +/-    0.61  0.060 / 0.100
G15     47.1           32.0                7.9 +/-    0.58      13.4 +/-    0.58  0.050 / 0.110
G20     343.2          65.4                7.4 +/-    0.66       8.1 +/-    0.66  0.070 / 0.180
G21     71.6           76.8                9.8 +/-    0.41      10.0 +/-    0.41  0.070 / 0.170
G24     105.7          24.1               11.1 +/-    1.45      22.1 +/-    1.45  0.040 / 0.050
G27     306.7          31.5                9.1 +/-    1.55      15.5 +/-    1.55  0.040 / 0.060
G29     168.2          13.8               11.7 +/-    3.71      30.0 +/-    3.71  0.170 / 0.280
G32     207.7          27.1               10.1 +/-    2.01      18.8 +/-    2.01  0.120 / 0.280