PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2019/04/19-05:12:50
G05     50.1           13.1                3.7 +/-    2.69       9.5 +/-    2.69  0.050 / 0.070
G10     238.1          15.9                8.2 +/-    1.80      19.9 +/-    1.80  0.070 / 0.050
G13     71.0           35.2                5.6 +/-    1.06       8.9 +/-    1.06  0.270 / 0.340
G15     116.6          54.3                7.3 +/-    0.56       8.7 +/-    0.56  0.130 / 0.200
G16     314.7          11.2                3.9 +/-    3.36      10.5 +/-    3.36  0.050 / 0.120
G20     251.4          39.6                8.1 +/-    1.15      11.8 +/-    1.15  0.070 / 0.120
G21     318.4          50.5                6.7 +/-    1.22       8.4 +/-    1.22  0.240 / 0.510
G26     287.2          19.0                6.3 +/-    1.40      14.3 +/-    1.40  0.220 / 0.610
G29     153.2          64.0                7.3 +/-    0.36       8.1 +/-    0.36  0.060 / 0.180