PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2019/10/19-17:27:50
G10     255.5          32.3               11.8 +/-    2.64      19.8 +/-    2.64  0.130 / 0.400
G13     48.5           25.4               10.4 +/-    1.83      20.1 +/-    1.83  0.150 / 0.420
G15     73.9           54.9                9.9 +/-    0.66      11.8 +/-    0.66  0.060 / 0.040
G16     289.6          15.5                8.2 +/-    1.51      20.0 +/-    1.51  0.070 / 0.050
G20     280.1          55.8               11.5 +/-    2.62      13.6 +/-    2.62  0.160 / 0.160
G21     341.1          63.5               10.9 +/-    0.55      12.1 +/-    0.55  0.270 / 0.170
G26     263.2          13.3                9.7 +/-    1.64      25.1 +/-    1.64  0.040 / 0.040
G29     165.3          45.1               12.3 +/-    1.33      16.5 +/-    1.33  0.040 / 0.030