PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2018/02/11-07:42:50
G02     37.2           52.0                2.9 +/-    1.09       3.6 +/-    1.09  0.030 / 0.030
G05     132.7          64.0                5.9 +/-    0.61       6.4 +/-    0.61  0.030 / 0.030
G06     54.2           16.8                2.2 +/-    2.25       5.2 +/-    2.25  0.150 / 0.300
G12     200.5          66.7                4.2 +/-    0.46       4.5 +/-    0.46  0.190 / 0.340
G20     200.9          23.7                4.8 +/-    2.54       9.7 +/-    2.54  0.290 / 0.240
G25     294.8          54.0                3.3 +/-    2.65       4.0 +/-    2.65  0.160 / 0.170
G29     309.5          30.8                2.2 +/-    1.43       3.8 +/-    1.43  0.030 / 0.030