PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2019/12/20-14:57:50
G08     316.5          15.1                4.5 +/-    3.16      11.1 +/-    3.16  0.060 / 0.060
G10     317.7          57.8                5.6 +/-    0.82       6.5 +/-    0.82  0.050 / 0.060
G14     213.6          17.9                6.3 +/-    1.44      14.6 +/-    1.44  0.100 / 0.320
G15     45.6           14.8                4.4 +/-    1.67      11.0 +/-    1.67  0.190 / 0.430
G20     25.6           62.0                6.6 +/-    1.70       7.4 +/-    1.70  0.030 / 0.030
G21     122.2          64.7                6.1 +/-    0.76       6.7 +/-    0.76  0.030 / 0.030
G24     87.1           29.9                7.1 +/-    1.23      12.5 +/-    1.23  0.150 / 0.380
G27     287.7          37.9                7.0 +/-    1.84      10.5 +/-    1.84  0.290 / 0.330
G32     215.0          44.5                7.5 +/-    0.85      10.2 +/-    0.85  0.040 / 0.030