PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2018/12/24-02:27:50
G07     55.9           68.6                5.0 +/-    0.59       5.3 +/-    0.59  0.040 / 0.040
G08     49.9           38.1                3.2 +/-    0.58       4.7 +/-    0.58  0.030 / 0.040
G09     176.8          35.9                7.9 +/-    0.74      12.3 +/-    0.74  0.260 / 0.260
G11     117.5          35.1                6.3 +/-    1.02      10.0 +/-    1.02  0.150 / 0.320
G17     198.6          16.0                6.1 +/-    1.71      14.7 +/-    1.71  0.050 / 0.090
G18     101.2          16.0                5.8 +/-    1.06      14.2 +/-    1.06  0.050 / 0.080
G23     161.5          10.7                5.3 +/-    0.90      14.6 +/-    0.90  0.090 / 0.220
G27     37.9           10.5                4.1 +/-    2.32      11.2 +/-    2.32  0.120 / 0.250
G28     271.7          50.4                3.8 +/-    1.16       4.8 +/-    1.16  0.040 / 0.050
G30     329.7          58.5                2.8 +/-    0.82       3.3 +/-    0.82  0.040 / 0.040