PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2018/02/16-19:28:10
G03     219.0          63.7               11.4 +/-    0.56      12.5 +/-    0.56  0.040 / 0.050
G09     306.0          21.1                9.8 +/-    2.96      20.9 +/-    2.96  0.040 / 0.050
G14     103.6          12.2               12.1 +/-    2.64      32.1 +/-    2.64  0.130 / 0.410
G16     117.3          62.5               14.4 +/-    0.92      16.0 +/-    0.92  0.140 / 0.460
G22     190.3          49.0               13.9 +/-    1.52      17.7 +/-    1.52  0.070 / 0.070
G23     324.7          54.5               12.4 +/-    1.10      14.9 +/-    1.10  0.050 / 0.080
G26     61.3           48.4               10.9 +/-    0.56      14.0 +/-    0.56  0.150 / 0.580
G31     55.2           15.2               10.0 +/-    1.55      24.7 +/-    1.55  0.210 / 0.670