PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2018/01/25-18:42:50
G01     266.9          40.3               12.9 +/-    1.58      18.7 +/-    1.58  0.050 / 0.050
G03     316.3          33.9                9.4 +/-    1.38      15.3 +/-    1.38  0.050 / 0.060
G10     131.4          15.0               12.8 +/-    1.43      31.7 +/-    1.43  0.110 / 0.150
G11     249.8          19.2               11.0 +/-    1.21      24.6 +/-    1.21  0.190 / 0.180
G14     45.9           48.9               11.7 +/-    0.39      14.9 +/-    0.39  0.050 / 0.090
G22     313.4          55.0               11.9 +/-    0.85      14.1 +/-    0.85  0.080 / 0.090
G25     50.0           16.1               10.1 +/-    1.90      24.4 +/-    1.90  0.050 / 0.030
G26     146.2          27.4               15.1 +/-    1.40      27.9 +/-    1.40  0.030 / 0.040
G31     49.8           71.3               12.6 +/-    0.40      13.2 +/-    0.40  0.100 / 0.230
G32     66.9           30.4               11.4 +/-    0.69      19.7 +/-    0.69  0.100 / 0.260