PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2018/02/25-01:12:40
G01     69.0           32.7                6.3 +/-    1.09      10.5 +/-    1.09  0.030 / 0.050
G07     138.4          29.9               10.0 +/-    1.03      17.5 +/-    1.03  0.030 / 0.040
G11     54.5           32.1                4.9 +/-    1.42       8.3 +/-    1.42  0.050 / 0.060
G13     273.3          37.0                8.2 +/-    2.58      12.5 +/-    2.58  0.050 / 0.060
G15     300.5          16.0                4.5 +/-    1.35      11.0 +/-    1.35  0.040 / 0.030
G17     235.7          68.4                8.6 +/-    0.47       9.2 +/-    0.47  0.030 / 0.030
G19     225.6          43.8                9.5 +/-    2.21      13.1 +/-    2.21  0.070 / 0.080
G28     23.5           58.6                6.5 +/-    2.97       7.4 +/-    2.97  0.060 / 0.090
G30     136.7          56.0                9.9 +/-    0.26      11.7 +/-    0.26  0.050 / 0.080