PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2019/05/07-07:28:00
G08     294.7          23.0                3.8 +/-    1.60       7.8 +/-    1.60  0.080 / 0.130
G10     7.8            62.8                2.5 +/-    0.56       2.8 +/-    0.56  0.070 / 0.140
G14     228.4          46.1                7.1 +/-    1.04       9.4 +/-    1.04  0.030 / 0.030
G18     317.7          10.4              -11.3 +/-   11.11     -31.2 +/-   11.11  0.030 / 0.030
G20     64.1           52.7                4.1 +/-    0.62       5.0 +/-    0.62  0.080 / 0.090
G24     56.5           25.4                3.8 +/-    0.90       7.3 +/-    0.90  0.070 / 0.110
G27     257.1          32.5                5.7 +/-    2.24       9.5 +/-    2.24  0.110 / 0.180
G32     240.7          62.7                8.4 +/-    0.30       9.3 +/-    0.30  0.080 / 0.160