PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2019/10/16-18:57:50
G10     297.9          52.8                8.8 +/-    1.52      10.8 +/-    1.52  0.050 / 0.090
G15     46.1           27.6                8.8 +/-    1.48      16.1 +/-    1.48  0.050 / 0.100
G20     355.1          65.2                9.3 +/-    0.70      10.2 +/-    0.70  0.070 / 0.120
G21     91.5           74.9               10.8 +/-    0.46      11.1 +/-    0.46  0.070 / 0.130
G24     100.6          26.3                9.5 +/-    0.82      18.0 +/-    0.82  0.040 / 0.040
G27     301.9          34.0                8.5 +/-    1.27      13.8 +/-    1.27  0.040 / 0.040
G32     209.4          32.0               10.2 +/-    1.31      17.1 +/-    1.31  0.060 / 0.040