PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2018/02/15-19:57:30
G03     205.3          53.1               11.8 +/-    0.83      14.3 +/-    0.83  0.080 / 0.110
G07     259.7          17.1               12.8 +/-    1.23      30.3 +/-    1.23  0.090 / 0.090
G09     311.7          29.9                9.7 +/-    1.69      17.0 +/-    1.69  0.040 / 0.050
G16     87.8           64.9               12.3 +/-    0.94      13.4 +/-    0.94  0.030 / 0.040
G22     186.2          37.3               13.8 +/-    1.91      20.9 +/-    1.91  0.130 / 0.280
G23     335.3          64.0               11.9 +/-    1.22      13.1 +/-    1.22  0.200 / 0.340
G26     50.7           40.3               11.6 +/-    1.40      16.8 +/-    1.40  0.040 / 0.050
G27     130.7          13.3               15.8 +/-    2.17      41.0 +/-    2.17  0.040 / 0.060