PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2018/10/22-15:28:00
G02     57.5           35.1                8.4 +/-    1.13      13.3 +/-    1.13  0.050 / 0.060
G05     64.0           66.1                8.9 +/-    0.66       9.6 +/-    0.66  0.040 / 0.070
G12     183.8          32.7               12.2 +/-    2.01      20.2 +/-    2.01  0.110 / 0.300
G13     128.5          14.5               14.2 +/-    3.16      35.8 +/-    3.16  0.140 / 0.350
G15     167.0          9.9               -10.3 +/-   13.44     -28.8 +/-   13.44  0.140 / 0.440
G21     271.0          17.5                8.5 +/-    2.50      20.0 +/-    2.50  0.180 / 0.320
G25     232.0          52.0                9.6 +/-    1.30      11.8 +/-    1.30  0.040 / 0.030
G29     327.8          53.5                5.4 +/-    1.12       6.5 +/-    1.12  0.040 / 0.030