PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2019/06/09-13:13:00
G07     317.9          53.1                5.9 +/-    0.66       7.2 +/-    0.66  0.350 / 0.560
G08     124.2          43.6                7.3 +/-    0.56      10.0 +/-    0.56  0.190 / 0.490
G09     287.7          81.0                4.9 +/-    0.50       4.9 +/-    0.50  0.050 / 0.050
G16     42.7           21.3                5.4 +/-    2.46      11.5 +/-    2.46  0.050 / 0.050
G23     147.0          56.6                7.7 +/-    0.31       9.1 +/-    0.31  0.060 / 0.070
G27     74.9           37.4                5.6 +/-    1.35       8.5 +/-    1.35  0.060 / 0.060
G28     225.8          11.4               -2.1 +/-   15.34      -5.7 +/-   15.34  0.030 / 0.050
G30     290.9          27.8                5.2 +/-    2.95       9.6 +/-    2.95  0.040 / 0.050