PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2019/12/15-21:12:40
G01     220.5          13.6               10.7 +/-    3.53      27.5 +/-    3.53  0.050 / 0.040
G03     279.0          69.1                8.0 +/-    0.68       8.5 +/-    0.68  0.050 / 0.040
G09     298.1          14.9                5.5 +/-    3.54      13.7 +/-    3.54  0.100 / 0.210
G14     87.9           25.1                8.9 +/-    1.50      17.4 +/-    1.50  0.120 / 0.190
G16     139.6          49.1               10.3 +/-    0.62      13.2 +/-    0.62  0.050 / 0.060
G22     211.0          67.0                8.9 +/-    0.44       9.6 +/-    0.44  0.050 / 0.060
G23     310.2          40.0                8.2 +/-    1.13      11.9 +/-    1.13  0.030 / 0.030
G26     90.0           54.5                8.8 +/-    1.12      10.5 +/-    1.12  0.030 / 0.030
G31     47.0           29.1                7.1 +/-    1.77      12.8 +/-    1.77  0.070 / 0.090