PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2019/07/26-00:12:30
G10     281.8          46.8               10.2 +/-    2.27      13.4 +/-    2.27  0.110 / 0.100
G15     49.7           38.5                8.4 +/-    1.28      12.5 +/-    1.28  0.080 / 0.110
G20     322.4          64.0                9.7 +/-    0.62      10.6 +/-    0.62  0.050 / 0.040
G21     41.7           77.0               10.1 +/-    1.03      10.3 +/-    1.03  0.050 / 0.030
G24     110.7          21.0                9.5 +/-    2.45      20.4 +/-    2.45  0.070 / 0.070
G27     312.2          27.1                7.9 +/-    2.11      14.8 +/-    2.11  0.030 / 0.080
G29     167.7          18.6               10.4 +/-    1.74      23.7 +/-    1.74  0.330 / 0.290
G32     206.5          19.2               15.0 +/-    2.53      33.6 +/-    2.53  0.110 / 0.150