PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2018/01/28-02:42:30
G01     82.7           33.0                4.7 +/-    1.09       7.7 +/-    1.09  0.040 / 0.040
G07     130.8          40.0                6.9 +/-    1.21      10.0 +/-    1.21  0.040 / 0.050
G11     63.8           38.1                3.5 +/-    1.14       5.3 +/-    1.14  0.050 / 0.070
G13     288.1          36.9                4.0 +/-    1.16       6.2 +/-    1.16  0.060 / 0.080
G15     310.1          13.1                2.7 +/-    1.66       7.0 +/-    1.66  0.060 / 0.050
G17     220.3          59.1                7.0 +/-    1.48       8.1 +/-    1.48  0.050 / 0.040
G19     217.8          33.6                6.7 +/-    1.38      11.0 +/-    1.38  0.120 / 0.300
G28     2.9            61.0                3.7 +/-    0.49       4.1 +/-    0.49  0.150 / 0.240
G30     122.5          67.1                6.7 +/-    0.71       7.2 +/-    0.71  0.050 / 0.050