PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2019/05/08-14:42:50
G03     187.3          17.3                7.0 +/-    1.29      16.6 +/-    1.29  0.190 / 0.270
G07     296.6          43.9                8.4 +/-    1.20      11.5 +/-    1.20  0.220 / 0.320
G08     140.1          29.2               11.8 +/-    1.08      20.9 +/-    1.08  0.050 / 0.080
G09     319.9          63.0                8.3 +/-    1.06       9.1 +/-    1.06  0.050 / 0.070
G16     43.2           39.8                6.8 +/-    0.98       9.9 +/-    0.98  0.050 / 0.090
G23     120.8          77.3                9.2 +/-    0.60       9.4 +/-    0.60  0.050 / 0.080
G26     44.1           11.8                8.9 +/-    2.76      24.0 +/-    2.76  0.040 / 0.090
G27     99.6           34.2                8.5 +/-    0.66      13.7 +/-    0.66  0.040 / 0.100
G30     275.9          15.6                8.7 +/-    1.28      21.3 +/-    1.28  0.040 / 0.040