PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2018/12/24-00:58:10
G07     325.6          55.6                4.8 +/-    0.40       5.7 +/-    0.40  0.030 / 0.040
G08     107.1          48.7                7.1 +/-    0.52       9.1 +/-    0.52  0.030 / 0.030
G09     201.1          80.1                5.3 +/-    0.53       5.4 +/-    0.53  0.040 / 0.050
G16     44.5           14.3                1.8 +/-    3.09       4.6 +/-    3.09  0.050 / 0.050
G23     153.4          52.3                7.0 +/-    0.78       8.5 +/-    0.78  0.270 / 0.430
G27     66.0           36.7                6.1 +/-    1.20       9.3 +/-    1.20  0.160 / 0.340
G28     231.1          21.1                4.1 +/-    3.52       8.8 +/-    3.52  0.220 / 0.230
G30     295.2          29.0                3.1 +/-    1.47       5.6 +/-    1.47  0.230 / 0.260