PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2019/06/30-04:42:50
G08     270.6          18.5                7.4 +/-    1.80      16.8 +/-    1.80  0.130 / 0.240
G10     61.1           57.5                5.2 +/-    0.96       6.1 +/-    0.96  0.120 / 0.260
G14     263.6          65.6                6.8 +/-    0.80       7.4 +/-    0.80  0.030 / 0.050
G18     312.8          32.0                5.0 +/-    1.10       8.4 +/-    1.10  0.030 / 0.030
G20     94.5           37.4                4.8 +/-    1.16       7.3 +/-    1.16  0.100 / 0.210
G21     155.0          16.8                5.1 +/-    1.21      12.1 +/-    1.21  0.200 / 0.270
G24     40.3           10.6                3.2 +/-    1.82       8.9 +/-    1.82  0.070 / 0.040
G27     233.2          17.1                6.8 +/-    1.75      16.1 +/-    1.75  0.070 / 0.050
G31     177.6          30.1                5.3 +/-    1.90       9.3 +/-    1.90  0.060 / 0.120
G32     327.1          74.9                5.7 +/-    0.61       5.9 +/-    0.61  0.050 / 0.130