PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2018/11/17-04:57:40
G07     51.7           69.0                5.5 +/-    0.52       5.9 +/-    0.52  0.040 / 0.040
G08     50.5           38.7                5.0 +/-    1.26       7.5 +/-    1.26  0.040 / 0.040
G09     175.6          35.1                8.2 +/-    1.37      13.0 +/-    1.37  0.030 / 0.030
G11     118.3          34.6                7.9 +/-    1.58      12.6 +/-    1.58  0.030 / 0.030
G17     198.6          15.2                4.4 +/-    2.47      10.8 +/-    2.47  0.280 / 0.410
G18     102.9          15.7                6.9 +/-    1.14      16.9 +/-    1.14  0.150 / 0.290
G23     161.4          11.2                4.0 +/-    2.21      10.8 +/-    2.21  0.190 / 0.230
G27     37.9           10.5                3.7 +/-    1.90      10.1 +/-    1.90  0.170 / 0.330
G28     271.3          50.5                4.9 +/-    0.91       6.2 +/-    0.91  0.100 / 0.240
G30     328.6          57.6                4.2 +/-    0.75       4.9 +/-    0.75  0.080 / 0.250