PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2019/12/13-21:42:40
G03     247.5          69.3                7.7 +/-    0.49       8.2 +/-    0.49  0.040 / 0.060
G09     304.0          21.8                6.5 +/-    2.22      13.8 +/-    2.22  0.040 / 0.050
G14     96.3           19.1                8.8 +/-    1.17      19.8 +/-    1.17  0.080 / 0.270
G16     125.8          57.2               10.2 +/-    0.51      11.9 +/-    0.51  0.090 / 0.290
G22     199.0          57.5                8.4 +/-    1.35       9.7 +/-    1.35  0.030 / 0.050
G23     317.5          47.3              -13.9 +/-    1.34     -18.2 +/-    1.34  0.040 / 0.060
G26     72.4           52.4                7.1 +/-    0.45       8.7 +/-    0.45  0.030 / 0.040
G31     51.5           21.1                4.7 +/-    0.74      10.1 +/-    0.74  0.030 / 0.030