PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2019/08/09-12:27:50
G01     82.6           32.3                4.4 +/-    0.79       7.3 +/-    0.79  0.050 / 0.050
G07     130.0          37.9                5.2 +/-    1.14       7.9 +/-    1.14  0.040 / 0.060
G11     62.8           38.4                2.8 +/-    0.62       4.2 +/-    0.62  0.070 / 0.110
G13     287.3          38.4                5.0 +/-    1.14       7.5 +/-    1.14  0.100 / 0.120
G15     311.8          11.8                2.1 +/-    1.77       5.7 +/-    1.77  0.040 / 0.080
G17     218.0          54.2                6.6 +/-    1.69       8.0 +/-    1.69  0.030 / 0.080
G18     57.7           22.3                2.4 +/-    1.10       4.9 +/-    1.10  0.060 / 0.120
G19     216.2          33.5                6.5 +/-    2.15      10.6 +/-    2.15  0.070 / 0.140
G28     345.2          61.6                3.5 +/-    0.73       3.9 +/-    0.73  0.040 / 0.110
G30     119.3          72.0                5.7 +/-    0.98       6.0 +/-    0.98  0.040 / 0.090