PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2018/09/14-09:13:00
G07     38.8           69.5                5.3 +/-    0.53       5.6 +/-    0.53  0.040 / 0.050
G08     53.6           41.8                5.1 +/-    0.57       7.3 +/-    0.57  0.040 / 0.050
G09     174.9          37.2                6.8 +/-    0.72      10.4 +/-    0.72  0.030 / 0.040
G11     122.2          32.6                6.9 +/-    1.04      11.4 +/-    1.04  0.020 / 0.040
G17     198.8          11.2                0.4 +/-   17.90       1.0 +/-   17.90  0.170 / 0.370
G18     107.2          14.1                5.3 +/-    1.84      13.5 +/-    1.84  0.170 / 0.350
G23     161.0          13.2                5.1 +/-    1.66      13.2 +/-    1.66  0.040 / 0.060
G27     38.4           12.2                2.0 +/-    0.91       5.3 +/-    0.91  0.040 / 0.050
G28     267.7          49.3                4.5 +/-    0.85       5.7 +/-    0.85  0.070 / 0.080
G30     325.6          55.1                4.5 +/-    0.53       5.3 +/-    0.53  0.060 / 0.080