PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2019/04/29-04:27:30
G05     49.4           14.5                1.4 +/-    3.20       3.4 +/-    3.20  0.040 / 0.070
G10     236.9          14.6                6.0 +/-    2.63      15.0 +/-    2.63  0.040 / 0.070
G13     73.2           35.5                5.6 +/-    0.82       8.9 +/-    0.82  0.130 / 0.270
G15     119.7          53.4                7.6 +/-    0.55       9.2 +/-    0.55  0.140 / 0.250
G16     315.9          10.9                0.5 +/-   14.69       1.4 +/-   14.69  0.250 / 0.340
G20     249.7          38.3                8.8 +/-    1.61      13.1 +/-    1.61  0.160 / 0.360
G21     316.2          49.0                5.8 +/-    1.04       7.4 +/-    1.04  0.130 / 0.540
G25     198.1          9.9                 4.9 +/-    5.22      13.7 +/-    5.22  0.210 / 0.480
G26     288.6          19.3                5.6 +/-    1.72      12.6 +/-    1.72  0.090 / 0.250
G29     152.0          66.6                7.2 +/-    0.64       7.8 +/-    0.64  0.080 / 0.210