PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2017/12/29-01:28:10
G07     318.3          51.8                3.8 +/-    0.63       4.7 +/-    0.63  0.110 / 0.050
G08     116.6          47.1                6.7 +/-    1.07       8.8 +/-    1.07  0.080 / 0.040
G09     245.0          82.7                7.1 +/-    0.70       7.1 +/-    0.70  0.100 / 0.310
G16     43.3           19.0                3.1 +/-    2.18       6.9 +/-    2.18  0.200 / 0.210
G23     150.8          54.0                6.2 +/-    0.44       7.4 +/-    0.44  0.070 / 0.060
G27     66.1           35.4                5.2 +/-    1.59       8.1 +/-    1.59  0.050 / 0.060
G28     229.7          21.3                4.6 +/-    2.28       9.8 +/-    2.28  0.040 / 0.020
G30     294.2          29.7                3.5 +/-    1.28       6.1 +/-    1.28  0.040 / 0.020