PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2018/08/21-01:12:30
G08     292.9          23.6               10.2 +/-    1.33      20.6 +/-    1.33  0.060 / 0.090
G10     5.7            63.0               10.4 +/-    0.69      11.5 +/-    0.69  0.070 / 0.110
G14     228.9          44.5               17.4 +/-    1.60      23.7 +/-    1.60  0.050 / 0.080
G20     348.6          64.5               12.0 +/-    0.79      13.1 +/-    0.79  0.050 / 0.080
G21     146.2          42.6               14.0 +/-    0.66      19.6 +/-    0.66  0.070 / 0.090
G24     55.6           24.9               11.2 +/-    0.65      22.0 +/-    0.65  0.070 / 0.080
G27     255.8          32.2               13.6 +/-    1.78      22.8 +/-    1.78  0.090 / 0.220
G32     245.6          69.0               13.1 +/-    0.39      13.9 +/-    0.39  0.080 / 0.240