PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2019/08/22-22:13:10
G10     279.4          45.8               11.9 +/-    1.16      15.9 +/-    1.16  0.060 / 0.040
G15     51.1           41.0                8.9 +/-    1.12      12.8 +/-    1.12  0.060 / 0.040
G20     319.9          63.9               10.8 +/-    0.97      11.9 +/-    0.97  0.060 / 0.070
G21     32.5           76.4               10.9 +/-    0.66      11.1 +/-    0.66  0.080 / 0.070
G24     113.0          19.9               10.9 +/-    1.37      24.0 +/-    1.37  0.210 / 0.380
G27     313.4          26.0                7.8 +/-    1.99      15.0 +/-    1.99  0.180 / 0.390
G29     167.9          21.1               12.1 +/-    1.04      26.0 +/-    1.04  0.210 / 0.170
G32     205.8          18.1               14.3 +/-    1.39      33.0 +/-    1.39  0.100 / 0.150