PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2018/01/13-20:28:10
G01     238.0          27.2               10.4 +/-    1.50      19.3 +/-    1.50  0.040 / 0.040
G03     309.3          57.5               10.4 +/-    0.59      12.0 +/-    0.59  0.040 / 0.030
G14     73.1           33.4                9.3 +/-    1.09      15.2 +/-    1.09  0.100 / 0.170
G16     158.6          29.5               13.9 +/-    1.18      24.5 +/-    1.18  0.100 / 0.140
G22     271.2          75.2               12.3 +/-    0.56      12.6 +/-    0.56  0.080 / 0.150
G23     296.5          27.6                8.4 +/-    1.15      15.4 +/-    1.15  0.120 / 0.160
G26     122.6          47.8               12.7 +/-    1.30      16.5 +/-    1.30  0.040 / 0.070
G31     40.7           46.1                8.8 +/-    0.66      11.7 +/-    0.66  0.050 / 0.060
G32     88.2           14.9               10.0 +/-    1.80      24.8 +/-    1.80  0.050 / 0.130