PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2019/12/20-17:28:00
G01     316.5          24.8                6.5 +/-    1.29      12.8 +/-    1.29  0.250 / 0.330
G08     252.1          10.9                7.2 +/-    3.44      19.6 +/-    3.44  0.220 / 0.270
G10     88.1           48.1                9.0 +/-    0.80      11.6 +/-    0.80  0.040 / 0.050
G11     302.2          21.8                6.7 +/-    1.58      14.0 +/-    1.58  0.050 / 0.050
G14     300.6          69.8                7.2 +/-    0.48       7.6 +/-    0.48  0.270 / 0.530
G20     110.9          22.1                9.3 +/-    0.98      19.4 +/-    0.98  0.280 / 0.320
G22     303.5          13.2                8.2 +/-    1.77      21.2 +/-    1.77  0.170 / 0.380
G25     96.7           10.1                3.0 +/-   36.11       8.5 +/-   36.11  0.170 / 0.390
G31     175.3          46.5                9.1 +/-    0.96      12.0 +/-    0.96  0.050 / 0.040
G32     19.6           62.7                7.3 +/-    0.86       8.1 +/-    0.86  0.040 / 0.040