PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2018/03/14-19:42:30
G03     184.6          10.4               19.3 +/-    2.81      53.3 +/-    2.81  0.090 / 0.130
G07     299.3          42.2               20.0 +/-    2.70      28.0 +/-    2.70  0.090 / 0.130
G08     138.3          34.4               21.5 +/-    1.14      34.5 +/-    1.14  0.050 / 0.080
G09     315.8          71.0               19.0 +/-    0.66      19.9 +/-    0.66  0.050 / 0.060
G16     41.6           30.1               17.2 +/-    1.63      30.0 +/-    1.63  0.060 / 0.100
G23     136.4          67.9               21.3 +/-    0.71      22.8 +/-    0.71  0.050 / 0.080
G27     87.1           36.4               18.9 +/-    1.65      29.3 +/-    1.65  0.130 / 0.130
G30     281.9          20.6               18.8 +/-    1.51      40.7 +/-    1.51  0.120 / 0.160