PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2019/04/26-08:13:10
G08     293.9          23.1                5.4 +/-    1.69      11.0 +/-    1.69  0.050 / 0.100
G10     8.7            62.8                4.4 +/-    0.65       4.9 +/-    0.65  0.060 / 0.090
G14     228.9          46.6                8.1 +/-    0.79      10.7 +/-    0.79  0.030 / 0.020
G18     317.7          10.9               -9.4 +/-   16.48     -25.6 +/-   16.48  0.040 / 0.030
G20     64.7           52.4                5.7 +/-    0.79       7.0 +/-    0.79  0.090 / 0.120
G21     146.1          39.6                7.5 +/-    0.90      10.9 +/-    0.90  0.100 / 0.120
G24     55.9           25.1                3.6 +/-    1.03       7.0 +/-    1.03  0.080 / 0.110
G27     256.8          32.3                6.9 +/-    1.62      11.5 +/-    1.62  0.060 / 0.090
G32     241.1          62.5                8.7 +/-    0.67       9.7 +/-    0.67  0.100 / 0.120