PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2019/10/18-16:57:50
G05     51.7           12.3                7.4 +/-    1.34      19.5 +/-    1.34  0.110 / 0.130
G10     242.6          21.4               11.0 +/-    1.24      23.4 +/-    1.24  0.140 / 0.180
G13     62.9           33.1                8.4 +/-    0.48      13.7 +/-    0.48  0.040 / 0.060
G15     104.4          56.8               10.3 +/-    0.58      12.1 +/-    0.58  0.040 / 0.060
G16     304.7          15.4                7.1 +/-    4.21      17.5 +/-    4.21  0.130 / 0.790
G20     259.2          45.9                9.7 +/-    0.70      13.0 +/-    0.70  0.140 / 0.700
G21     322.9          52.9                9.7 +/-    1.05      11.9 +/-    1.05  0.030 / 0.040
G26     277.8          18.6                8.3 +/-    1.03      18.8 +/-    1.03  0.030 / 0.040
G29     160.0          62.5               10.5 +/-    0.97      11.7 +/-    0.97  0.100 / 0.160