PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2019/04/19-05:27:50
G10     242.9          20.9                8.2 +/-    3.90      17.7 +/-    3.90  0.030 / 0.040
G13     62.9           33.5                5.7 +/-    1.21       9.4 +/-    1.21  0.030 / 0.050
G15     103.8          56.8                7.9 +/-    0.71       9.2 +/-    0.71  0.140 / 0.330
G16     308.8          13.1                5.9 +/-    5.37      15.3 +/-    5.37  0.160 / 0.260
G20     258.4          44.5                7.9 +/-    3.57      10.8 +/-    3.57  0.070 / 0.130
G21     325.5          54.9                5.8 +/-    0.61       7.0 +/-    0.61  0.060 / 0.120
G26     280.4          18.0                7.5 +/-    0.93      17.4 +/-    0.93  0.110 / 0.280
G29     157.4          56.4                7.5 +/-    0.59       8.8 +/-    0.59  0.080 / 0.260