PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2019/07/26-22:43:00
G10     243.0          21.4               14.1 +/-    1.16      30.0 +/-    1.16  0.040 / 0.060
G13     62.5           33.1                9.1 +/-    1.04      15.0 +/-    1.04  0.040 / 0.060
G15     105.4          57.1               13.3 +/-    0.66      15.5 +/-    0.66  0.060 / 0.130
G16     305.4          14.8                7.5 +/-    1.25      18.7 +/-    1.25  0.050 / 0.130
G20     258.4          44.0               12.7 +/-    3.53      17.4 +/-    3.53  0.030 / 0.050
G21     323.0          53.0               10.9 +/-    0.58      13.2 +/-    0.58  0.030 / 0.040
G26     277.6          18.4               10.2 +/-    1.70      23.3 +/-    1.70  0.110 / 0.340
G29     159.4          60.3               12.6 +/-    0.52      14.3 +/-    0.52  0.130 / 0.420