PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2018/02/09-08:58:10
G02     61.2           30.3                4.6 +/-    1.14       8.1 +/-    1.14  0.020 / 0.030
G05     56.8           59.7                4.1 +/-    0.48       4.7 +/-    0.48  0.020 / 0.030
G12     186.1          33.4                6.0 +/-    1.63       9.7 +/-    1.63  0.040 / 0.050
G13     128.7          15.4                6.6 +/-    2.28      16.3 +/-    2.28  0.040 / 0.040
G15     162.3          13.1                6.8 +/-    4.16      17.6 +/-    4.16  0.050 / 0.080
G20     210.7          55.1                6.2 +/-    0.76       7.4 +/-    0.76  0.050 / 0.080
G21     272.5          19.7                3.3 +/-    1.98       7.3 +/-    1.98  0.070 / 0.200
G25     237.4          51.6                6.2 +/-    2.66       7.7 +/-    2.66  0.170 / 0.270
G29     330.1          56.6                2.9 +/-    0.36       3.5 +/-    0.36  0.230 / 0.380