PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2018/08/21-02:43:00
G01     317.8          20.8                9.5 +/-    2.35      20.5 +/-    2.35  0.120 / 0.250
G08     252.8          11.3               10.6 +/-    4.07      28.7 +/-    4.07  0.120 / 0.300
G10     85.2           51.0                8.1 +/-    0.98      10.0 +/-    0.98  0.180 / 0.270
G11     298.9          25.2               10.0 +/-    0.94      19.5 +/-    0.94  0.320 / 0.240
G14     305.3          70.7                8.9 +/-    0.35       9.4 +/-    0.35  0.040 / 0.050
G18     300.9          43.0                9.0 +/-    4.25      12.5 +/-    4.25  0.040 / 0.050
G20     88.6           59.8               11.9 +/-    0.72      13.5 +/-    0.72  0.070 / 0.150
G22     302.3          12.1                9.2 +/-    2.09      24.4 +/-    2.09  0.090 / 0.160
G31     172.8          47.8                9.8 +/-    1.07      12.7 +/-    1.07  0.200 / 0.350
G32     17.6           63.6                8.2 +/-    0.51       9.0 +/-    0.51  0.130 / 0.340