PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2019/06/30-04:27:50
G08     277.4          20.6                6.9 +/-    2.10      14.9 +/-    2.10  0.090 / 0.260
G10     48.2           60.0                5.1 +/-    0.33       5.8 +/-    0.33  0.090 / 0.240
G14     250.6          61.0                8.7 +/-    1.16       9.8 +/-    1.16  0.100 / 0.190
G18     315.6          26.1                3.2 +/-    1.44       6.2 +/-    1.44  0.090 / 0.160
G20     87.3           41.9                5.2 +/-    0.51       7.3 +/-    0.51  0.030 / 0.040
G21     153.5          23.4                6.2 +/-    2.12      12.5 +/-    2.12  0.020 / 0.030
G24     43.5           15.5                4.3 +/-    1.73      10.5 +/-    1.73  0.070 / 0.070
G27     238.6          21.6                8.5 +/-    1.76      18.1 +/-    1.76  0.060 / 0.060
G31     179.0          23.3                5.5 +/-    1.14      11.2 +/-    1.14  0.120 / 0.300
G32     298.1          75.6                7.4 +/-    0.90       7.6 +/-    0.90  0.120 / 0.340