PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2019/12/19-12:42:40
G05     51.9           10.8                3.1 +/-    2.94       8.4 +/-    2.94  0.360 / 0.280
G10     242.2          21.3                5.2 +/-    1.72      11.1 +/-    1.72  0.410 / 0.310
G13     63.4           33.1                4.8 +/-    1.20       7.8 +/-    1.20  0.210 / 0.400
G15     100.6          56.0                8.0 +/-    1.98       9.5 +/-    1.98  0.250 / 0.340
G16     305.2          15.3                3.2 +/-    1.95       7.8 +/-    1.95  0.050 / 0.040
G20     259.6          47.1                7.9 +/-    3.58      10.3 +/-    3.58  0.040 / 0.040
G21     324.3          53.8                4.3 +/-    0.34       5.2 +/-    0.34  0.040 / 0.030
G26     279.1          18.5                4.8 +/-    1.22      10.9 +/-    1.22  0.040 / 0.030
G29     159.5          63.2                8.4 +/-    0.86       9.2 +/-    0.86  0.090 / 0.200