PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2019/12/19-21:28:10
G03     234.0          67.0                8.0 +/-    0.66       8.6 +/-    0.66  0.060 / 0.060
G09     307.0          25.7                7.3 +/-    0.76      14.0 +/-    0.76  0.050 / 0.050
G14     100.3          15.8                9.2 +/-    2.07      22.5 +/-    2.07  0.140 / 0.310
G16     116.7          60.1               10.3 +/-    0.44      11.7 +/-    0.44  0.130 / 0.330
G22     195.3          52.5                9.0 +/-    0.40      11.0 +/-    0.40  0.130 / 0.150
G23     321.1          51.0                7.6 +/-    0.61       9.5 +/-    0.61  0.100 / 0.180
G26     65.4           50.2                6.5 +/-    0.71       8.1 +/-    0.71  0.040 / 0.030
G31     53.8           17.8                6.6 +/-    1.64      15.4 +/-    1.64  0.030 / 0.030