PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2017/11/30-04:57:30
G07     42.4           69.3                5.4 +/-    0.60       5.7 +/-    0.60  0.110 / 0.060
G08     53.5           42.0                5.0 +/-    1.05       7.1 +/-    1.05  0.100 / 0.110
G09     178.8          40.6                7.5 +/-    1.18      10.7 +/-    1.18  0.030 / 0.020
G11     122.4          32.2                6.4 +/-    1.03      10.7 +/-    1.03  0.030 / 0.030
G17     199.2          12.3                1.0 +/-   11.75       2.7 +/-   11.75  0.050 / 0.040
G23     161.0          12.3                5.3 +/-    1.22      14.0 +/-    1.22  0.050 / 0.060
G28     271.2          51.3                6.5 +/-    3.32       8.1 +/-    3.32  0.160 / 0.200
G30     330.1          58.0                4.7 +/-    0.60       5.4 +/-    0.60  0.130 / 0.520