PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2019/10/20-18:42:50
G10     298.8          53.1                9.3 +/-    0.85      11.3 +/-    0.85  0.060 / 0.110
G15     45.9           26.9                7.3 +/-    1.70      13.6 +/-    1.70  0.070 / 0.080
G20     356.9          65.1                9.5 +/-    0.97      10.4 +/-    0.97  0.070 / 0.120
G21     93.8           74.5               10.7 +/-    0.58      11.1 +/-    0.58  0.070 / 0.120
G24     99.9           26.6               11.0 +/-    1.03      20.7 +/-    1.03  0.040 / 0.050
G27     301.2          34.3                9.7 +/-    1.97      15.6 +/-    1.97  0.040 / 0.040
G32     209.7          32.6               10.0 +/-    0.83      16.6 +/-    0.83  0.030 / 0.040