PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2018/08/20-00:27:30
G08     313.6          17.1                9.6 +/-    2.86      22.7 +/-    2.86  0.080 / 0.090
G10     320.6          58.0                9.1 +/-    0.37      10.5 +/-    0.37  0.080 / 0.060
G14     215.1          23.8               13.2 +/-    2.30      26.4 +/-    2.30  0.040 / 0.040
G15     46.0           19.0                6.6 +/-    1.93      14.9 +/-    1.93  0.050 / 0.050
G20     311.2          53.9                7.9 +/-    1.71       9.5 +/-    1.71  0.070 / 0.100
G21     126.6          64.2               10.3 +/-    0.52      11.4 +/-    0.52  0.070 / 0.120
G24     79.5           29.4               10.5 +/-    0.66      18.6 +/-    0.66  0.140 / 0.250
G27     283.5          37.6                8.5 +/-    0.90      12.8 +/-    0.90  0.170 / 0.370
G32     218.1          48.0               11.5 +/-    0.73      14.9 +/-    0.73  0.240 / 0.300