PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2017/12/11-19:43:00
G01     319.9          15.2                9.0 +/-    2.00      22.3 +/-    2.00  0.260 / 0.390
G08     260.3          14.7               11.2 +/-    1.10      28.0 +/-    1.10  0.310 / 0.400
G10     73.9           55.5                7.5 +/-    0.75       8.8 +/-    0.75  0.120 / 0.470
G11     306.3          21.2                9.0 +/-    3.16      19.2 +/-    3.16  0.150 / 0.430
G14     287.8          69.9                8.6 +/-    0.78       9.1 +/-    0.78  0.060 / 0.080
G18     99.7           29.8               10.5 +/-    0.82      18.5 +/-    0.82  0.040 / 0.090
G27     225.2          10.4               12.3 +/-    6.94      34.1 +/-    6.94  0.050 / 0.060
G31     178.4          36.8               12.5 +/-    2.06      19.2 +/-    2.06  0.050 / 0.060
G32     357.6          70.1                8.5 +/-    0.84       9.0 +/-    0.84  0.030 / 0.020