PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2017/09/22-01:12:50
G01     319.9          14.9                6.8 +/-    1.73      17.0 +/-    1.73  0.030 / 0.020
G08     259.2          15.0               10.7 +/-    1.30      26.7 +/-    1.30  0.030 / 0.020
G10     72.6           56.0                8.0 +/-    0.65       9.4 +/-    0.65  0.180 / 0.270
G11     305.2          22.5                9.2 +/-    1.34      19.0 +/-    1.34  0.170 / 0.220
G14     289.3          70.5                7.6 +/-    0.60       8.0 +/-    0.60  0.030 / 0.020
G18     98.3           31.9                7.3 +/-    1.39      12.3 +/-    1.39  0.020 / 0.020
G27     225.3          10.7               14.7 +/-    4.45      40.3 +/-    4.45  0.240 / 0.280
G31     178.8          35.8               12.2 +/-    1.70      19.0 +/-    1.70  0.280 / 0.330
G32     350.0          71.3                6.6 +/-    0.42       6.9 +/-    0.42  0.050 / 0.070