PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2018/01/12-13:43:10
G10     258.1          31.9                5.0 +/-    1.22       8.5 +/-    1.22  0.100 / 0.170
G13     47.4           25.6                3.6 +/-    1.86       7.0 +/-    1.86  0.110 / 0.260
G15     69.0           53.0                5.3 +/-    0.49       6.5 +/-    0.49  0.060 / 0.050
G16     290.3          13.5                3.0 +/-    1.81       7.7 +/-    1.81  0.060 / 0.050
G18     287.0          62.6                3.5 +/-    0.75       3.9 +/-    0.75  0.060 / 0.040
G20     45.9           45.3                3.5 +/-    0.83       4.7 +/-    0.83  0.050 / 0.040
G21     354.1          68.4                2.8 +/-    0.69       3.0 +/-    0.69  0.240 / 0.300
G26     261.4          11.9                4.2 +/-    2.16      11.3 +/-    2.16  0.250 / 0.380
G27     321.3          12.9                2.4 +/-    1.98       6.4 +/-    1.98  0.110 / 0.140
G29     165.4          37.6                5.4 +/-    0.97       8.2 +/-    0.97  0.140 / 0.150