PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2018/02/15-19:13:10
G03     239.4          69.7               11.6 +/-    1.62      12.3 +/-    1.62  0.030 / 0.060
G09     301.2          14.8               10.7 +/-    1.95      26.6 +/-    1.95  0.030 / 0.060
G14     96.8           17.7               14.2 +/-    1.41      33.2 +/-    1.41  0.040 / 0.060
G16     133.7          56.5               14.6 +/-    1.41      17.1 +/-    1.41  0.030 / 0.060
G22     195.5          58.1               11.8 +/-    1.31      13.6 +/-    1.31  0.080 / 0.230
G23     317.7          47.6                8.9 +/-    1.45      11.6 +/-    1.45  0.080 / 0.200
G26     73.8           52.8               11.5 +/-    0.70      14.0 +/-    0.70  0.100 / 0.360
G31     50.7           21.6                7.8 +/-    1.89      16.5 +/-    1.89  0.120 / 0.430