PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2019/04/19-16:12:30
G03     184.6          11.7               11.9 +/-    3.22      32.1 +/-    3.22  0.170 / 0.140
G07     302.7          46.7               14.0 +/-    3.68      18.4 +/-    3.68  0.160 / 0.110
G08     135.1          34.0               13.4 +/-    2.19      21.7 +/-    2.19  0.040 / 0.030
G09     317.6          68.9               12.9 +/-    0.62      13.7 +/-    0.62  0.040 / 0.030
G16     42.2           35.4               11.2 +/-    1.44      17.6 +/-    1.44  0.080 / 0.060
G23     133.4          72.8               13.4 +/-    1.11      14.0 +/-    1.11  0.050 / 0.080
G27     92.9           36.2               13.1 +/-    1.24      20.3 +/-    1.24  0.040 / 0.030
G30     279.8          18.3               11.4 +/-   14.05      26.2 +/-   14.05  0.040 / 0.020