PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2018/01/25-02:12:50
G01     104.9          26.7                7.2 +/-    0.70      13.6 +/-    0.70  0.040 / 0.060
G07     109.9          56.7                6.4 +/-    0.53       7.5 +/-    0.53  0.050 / 0.060
G08     42.0           19.7                3.1 +/-    1.33       6.9 +/-    1.33  0.090 / 0.170
G09     175.1          12.6                8.7 +/-    1.71      22.8 +/-    1.71  0.090 / 0.130
G11     88.6           43.1                6.3 +/-    0.60       8.7 +/-    0.60  0.090 / 0.130
G13     308.7          29.1                5.7 +/-    2.00      10.3 +/-    2.00  0.090 / 0.130
G17     207.0          39.5                9.0 +/-    0.86      13.2 +/-    0.86  0.050 / 0.060
G19     209.6          15.5                7.1 +/-    3.07      17.4 +/-    3.07  0.050 / 0.080
G28     323.7          61.4                5.6 +/-    1.16       6.3 +/-    1.16  0.040 / 0.050
G30     53.3           78.3                5.4 +/-    1.11       5.5 +/-    1.11  0.030 / 0.040