PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2019/09/26-18:28:10
G05     52.1           11.0                7.5 +/-    2.65      20.6 +/-    2.65  0.050 / 0.060
G10     242.9          21.6               11.5 +/-    1.66      24.4 +/-    1.66  0.040 / 0.060
G13     62.5           33.0                7.1 +/-    1.40      11.8 +/-    1.40  0.080 / 0.110
G15     105.7          57.1                9.0 +/-    1.45      10.5 +/-    1.45  0.060 / 0.120
G16     304.4          15.4                5.8 +/-    3.05      14.4 +/-    3.05  0.030 / 0.040
G20     259.3          45.6               10.1 +/-    2.87      13.5 +/-    2.87  0.030 / 0.040
G21     323.0          52.9                9.0 +/-    0.66      10.9 +/-    0.66  0.120 / 0.420
G26     277.3          18.5                8.4 +/-    1.63      19.2 +/-    1.63  0.130 / 0.530
G29     160.1          61.8               10.2 +/-    0.36      11.4 +/-    0.36  0.220 / 0.160