PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2019/10/17-16:57:50
G05     50.9           13.7                7.3 +/-    1.71      18.7 +/-    1.71  0.080 / 0.180
G10     241.2          20.1                8.7 +/-    1.20      19.2 +/-    1.20  0.070 / 0.160
G13     65.0           33.7                8.5 +/-    0.67      13.9 +/-    0.67  0.070 / 0.080
G15     108.2          56.3                9.8 +/-    0.36      11.6 +/-    0.36  0.050 / 0.080
G16     306.4          15.0                5.5 +/-    2.08      13.8 +/-    2.08  0.130 / 0.620
G20     257.1          44.6                8.3 +/-    1.35      11.2 +/-    1.35  0.140 / 0.720
G21     321.0          51.6                9.2 +/-    1.17      11.4 +/-    1.17  0.030 / 0.040
G26     279.6          19.0                6.4 +/-    2.01      14.4 +/-    2.01  0.040 / 0.030
G29     159.0          64.6               10.2 +/-    0.69      11.2 +/-    0.69  0.130 / 0.230