PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2018/03/09-09:58:00
G10     259.5          33.0                4.8 +/-    2.38       7.9 +/-    2.38  0.120 / 0.220
G13     46.3           24.3                2.8 +/-    2.22       5.6 +/-    2.22  0.120 / 0.230
G15     67.0           52.4                4.0 +/-    0.81       4.9 +/-    0.81  0.080 / 0.060
G16     286.8          13.8                3.8 +/-    1.62       9.8 +/-    1.62  0.040 / 0.050
G20     45.0           46.8                4.7 +/-    1.09       6.2 +/-    1.09  0.040 / 0.040
G21     351.0          68.0                4.2 +/-    0.51       4.5 +/-    0.51  0.040 / 0.040
G24     126.7          9.8               -12.7 +/-   24.78     -35.6 +/-   24.78  0.110 / 0.110
G26     258.5          11.3                3.9 +/-    5.00      10.5 +/-    5.00  0.120 / 0.130
G27     321.0          13.8                1.4 +/-    2.54       3.5 +/-    2.54  0.120 / 0.360
G29     166.6          38.0                6.0 +/-    1.26       9.1 +/-    1.26  0.140 / 0.410