PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2018/02/19-19:58:10
G03     199.6          44.9               13.7 +/-    0.73      18.5 +/-    0.73  0.110 / 0.110
G07     266.1          21.8               12.7 +/-    3.07      26.7 +/-    3.07  0.090 / 0.130
G09     315.1          36.6               11.3 +/-    0.94      17.4 +/-    0.94  0.030 / 0.040
G16     68.5           61.9               13.2 +/-    0.99      14.8 +/-    0.99  0.040 / 0.050
G22     183.8          29.3               13.8 +/-    1.14      24.4 +/-    1.14  0.090 / 0.140
G23     345.9          71.1               11.2 +/-    0.66      11.8 +/-    0.66  0.120 / 0.160
G26     46.3           33.6               10.0 +/-    1.36      16.3 +/-    1.36  0.030 / 0.040
G27     124.6          18.6               13.1 +/-    1.27      29.8 +/-    1.27  0.040 / 0.030