PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2019/12/02-21:42:50
G01     227.9          21.1               10.1 +/-    1.73      21.6 +/-    1.73  0.040 / 0.030
G03     302.1          62.4                8.2 +/-    0.68       9.1 +/-    0.68  0.030 / 0.030
G14     78.1           31.9                7.0 +/-    2.66      11.8 +/-    2.66  0.080 / 0.150
G16     148.9          39.2               10.7 +/-    0.65      15.8 +/-    0.65  0.080 / 0.140
G22     240.8          74.0              -17.3 +/-    0.46     -17.9 +/-    0.46  0.040 / 0.040
G23     302.6          32.9                7.6 +/-    1.81      12.6 +/-    1.81  0.050 / 0.050
G26     108.8          52.3                9.4 +/-    0.96      11.5 +/-    0.96  0.060 / 0.080
G31     43.5           37.7                7.6 +/-    1.09      11.5 +/-    1.09  0.050 / 0.080