PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2019/06/22-12:27:50
G07     322.3          54.8                3.7 +/-    0.67       4.5 +/-    0.67  0.260 / 0.970
G08     120.4          46.0                6.4 +/-    0.79       8.5 +/-    0.79  0.190 / 0.410
G09     259.4          82.7                6.3 +/-    1.27       6.3 +/-    1.27  0.040 / 0.050
G16     43.5           17.6                4.1 +/-    3.37       9.6 +/-    3.37  0.040 / 0.040
G23     149.1          51.8                6.5 +/-    0.62       8.0 +/-    0.62  0.060 / 0.060
G27     69.9           36.7                5.6 +/-    1.23       8.7 +/-    1.23  0.110 / 0.180
G28     227.8          14.3                2.9 +/-   13.27       7.4 +/-   13.27  0.030 / 0.060
G30     293.6          29.6                4.2 +/-    2.50       7.4 +/-    2.50  0.030 / 0.060