PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2018/01/30-16:12:40
G01     320.5          13.1                6.0 +/-    0.98      15.7 +/-    0.98  0.040 / 0.050
G08     264.3          15.8                9.8 +/-    1.67      23.8 +/-    1.67  0.040 / 0.050
G10     69.9           56.6                6.1 +/-    0.81       7.2 +/-    0.81  0.120 / 0.410
G11     309.4          18.6                8.1 +/-    1.36      18.5 +/-    1.36  0.120 / 0.260
G14     278.1          68.0                7.3 +/-    0.55       7.8 +/-    0.55  0.130 / 0.280
G27     227.1          12.1                9.1 +/-    3.82      24.2 +/-    3.82  0.120 / 0.280
G31     177.3          35.9               10.4 +/-    1.11      16.2 +/-    1.11  0.180 / 0.320
G32     355.4          71.1                7.0 +/-    0.68       7.4 +/-    0.68  0.190 / 0.330