PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2017/08/23-03:13:00
G01     320.1          14.0                8.1 +/-    3.30      20.7 +/-    3.30  0.030 / 0.030
G08     260.1          15.6                9.5 +/-    3.67      23.2 +/-    3.67  0.020 / 0.030
G10     70.4           56.7                9.1 +/-    0.78      10.7 +/-    0.78  0.040 / 0.050
G11     305.8          22.4                7.6 +/-    1.39      15.9 +/-    1.39  0.040 / 0.050
G14     286.1          70.3               10.2 +/-    0.64      10.8 +/-    0.64  0.140 / 0.330
G18     96.8           33.4               10.2 +/-    0.54      16.6 +/-    0.54  0.180 / 0.330
G27     226.2          11.5                9.9 +/-    2.74      26.8 +/-    2.74  0.150 / 0.330
G31     177.9          35.7               11.6 +/-    1.40      18.2 +/-    1.40  0.150 / 0.290
G32     350.5          71.5                9.5 +/-    0.62       9.9 +/-    0.62  0.080 / 0.080