PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2018/03/13-13:12:50
G08     269.7          17.2                5.4 +/-    1.56      12.8 +/-    1.56  0.190 / 0.270
G10     63.4           58.1                5.7 +/-    0.76       6.5 +/-    0.76  0.240 / 0.220
G11     312.4          15.8                3.2 +/-    2.24       7.9 +/-    2.24  0.040 / 0.050
G14     267.1          64.9                8.7 +/-    0.78       9.5 +/-    0.78  0.040 / 0.050
G21     154.4          12.7                5.6 +/-    2.35      14.8 +/-    2.35  0.060 / 0.070
G27     230.0          14.6                5.4 +/-    1.72      13.6 +/-    1.72  0.050 / 0.070
G31     177.1          33.0                7.2 +/-    1.73      11.8 +/-    1.73  0.110 / 0.240
G32     347.8          73.0                7.5 +/-    0.67       7.8 +/-    0.67  0.150 / 0.240