PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2019/02/26-17:27:40
G03     244.5          70.5                9.8 +/-    0.54      10.3 +/-    0.54  0.040 / 0.040
G09     300.6          14.7                7.8 +/-    1.41      19.5 +/-    1.41  0.040 / 0.040
G14     96.3           16.3                9.3 +/-    1.95      22.5 +/-    1.95  0.100 / 0.270
G16     141.6          53.3                9.8 +/-    0.72      11.9 +/-    0.72  0.080 / 0.270
G22     195.4          58.4               10.6 +/-    0.78      12.2 +/-    0.78  0.110 / 0.250
G23     314.8          44.4                8.8 +/-    1.03      12.0 +/-    1.03  0.110 / 0.290
G26     84.3           56.4                8.9 +/-    0.73      10.5 +/-    0.73  0.040 / 0.040
G31     49.3           25.6                6.9 +/-    1.73      13.4 +/-    1.73  0.040 / 0.050