PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2019/12/16-20:12:40
G01     240.1          31.6                9.0 +/-    1.51      15.2 +/-    1.51  0.030 / 0.030
G03     314.7          49.1                8.8 +/-    0.80      11.2 +/-    0.80  0.040 / 0.040
G14     63.7           40.2                8.8 +/-    0.89      12.8 +/-    0.89  0.050 / 0.100
G16     157.8          25.0               11.2 +/-    3.23      21.8 +/-    3.23  0.060 / 0.090
G22     292.8          70.7                7.4 +/-    1.20       7.7 +/-    1.20  0.070 / 0.160
G23     291.5          23.2                9.0 +/-    1.32      18.4 +/-    1.32  0.090 / 0.150
G26     130.0          43.4               10.1 +/-    0.62      13.9 +/-    0.62  0.060 / 0.060
G31     40.9           52.2                7.3 +/-    0.57       8.9 +/-    0.57  0.060 / 0.060
G32     83.3           17.1                8.8 +/-    1.90      20.7 +/-    1.90  0.120 / 0.240