PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2019/02/19-10:58:00
G10     282.6          46.7                5.3 +/-    2.28       6.9 +/-    2.28  0.040 / 0.030
G15     49.2           37.4                5.2 +/-    0.75       7.9 +/-    0.75  0.040 / 0.040
G20     326.2          64.6                5.2 +/-    0.44       5.7 +/-    0.44  0.080 / 0.080
G21     68.4           74.9                5.4 +/-    0.64       5.6 +/-    0.64  0.110 / 0.060
G24     106.4          21.5                5.4 +/-    2.07      11.4 +/-    2.07  0.100 / 0.280
G27     312.4          26.3                4.3 +/-    1.70       8.1 +/-    1.70  0.130 / 0.300
G29     166.3          14.4                3.7 +/-    1.37       9.3 +/-    1.37  0.050 / 0.050
G32     207.4          18.2                4.2 +/-    1.46       9.8 +/-    1.46  0.030 / 0.040