PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2018/12/23-18:43:00
G01     309.3          32.0               10.1 +/-    1.00      17.0 +/-    1.00  0.090 / 0.160
G10     103.6          40.9                9.2 +/-    0.85      13.2 +/-    0.85  0.100 / 0.140
G11     282.9          28.4                9.7 +/-    1.68      17.5 +/-    1.68  0.040 / 0.050
G14     353.3          67.9                1.0 +/-    0.73       1.1 +/-    0.73  0.040 / 0.050
G18     276.3          51.4               13.2 +/-    1.59      16.4 +/-    1.59  0.050 / 0.070
G20     119.0          15.7                9.2 +/-    1.33      22.6 +/-    1.33  0.040 / 0.060
G22     309.0          23.7                8.8 +/-    2.76      17.7 +/-    2.76  0.080 / 0.190
G25     79.0           14.7                8.2 +/-    1.31      20.4 +/-    1.31  0.090 / 0.190
G31     175.0          58.8               10.3 +/-    0.83      11.9 +/-    0.83  0.080 / 0.150
G32     32.1           55.2                7.3 +/-    0.37       8.7 +/-    0.37  0.090 / 0.140