PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2018/10/27-17:43:10
G10     251.3          27.7                9.8 +/-    1.17      18.0 +/-    1.17  0.110 / 0.360
G13     52.6           29.1                8.5 +/-    2.92      15.2 +/-    2.92  0.120 / 0.360
G15     90.1           59.1                8.8 +/-    1.40      10.1 +/-    1.40  0.040 / 0.050
G16     295.0          15.4                7.8 +/-    1.43      19.2 +/-    1.43  0.040 / 0.060
G20     271.1          51.4               10.7 +/-    3.10      13.2 +/-    3.10  0.070 / 0.220
G21     336.9          61.6                9.3 +/-    0.66      10.4 +/-    0.66  0.110 / 0.150
G26     267.9          15.1                8.7 +/-    3.11      21.6 +/-    3.11  0.030 / 0.040
G29     164.5          48.8               11.0 +/-    0.62      14.1 +/-    0.62  0.030 / 0.040