PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2018/02/15-15:27:40
G01     317.7          20.7                5.8 +/-    3.17      12.5 +/-    3.17  0.110 / 0.290
G08     256.8          11.4                7.1 +/-    2.18      19.2 +/-    2.18  0.110 / 0.290
G10     84.7           51.6                7.2 +/-    1.32       8.9 +/-    1.32  0.040 / 0.060
G11     302.2          22.8                6.2 +/-    1.65      12.7 +/-    1.65  0.040 / 0.060
G14     303.9          70.4                6.8 +/-    1.06       7.2 +/-    1.06  0.050 / 0.060
G22     302.7          14.2                5.8 +/-    2.85      14.8 +/-    2.85  0.040 / 0.050
G31     174.6          46.5                9.0 +/-    1.28      11.9 +/-    1.28  0.210 / 0.520
G32     15.1           64.4                4.7 +/-    0.93       5.1 +/-    0.93  0.190 / 0.510