PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2018/02/17-18:43:10
G01     224.6          15.2               12.7 +/-    2.68      31.4 +/-    2.68  0.040 / 0.030
G03     272.3          71.0               11.4 +/-    0.73      12.0 +/-    0.73  0.040 / 0.040
G14     88.4           23.8               12.4 +/-    3.17      25.0 +/-    3.17  0.100 / 0.090
G16     145.4          47.5               14.6 +/-    1.04      19.1 +/-    1.04  0.110 / 0.090
G22     206.9          67.8               13.1 +/-    0.22      14.1 +/-    0.22  0.040 / 0.050
G23     310.2          40.4               10.7 +/-    1.15      15.4 +/-    1.15  0.040 / 0.060
G26     91.6           54.4               12.5 +/-    1.07      15.0 +/-    1.07  0.130 / 0.170
G31     46.4           29.4               10.0 +/-    1.40      17.7 +/-    1.40  0.150 / 0.170