PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2019/08/27-22:42:40
G10     312.4          56.6                9.2 +/-    1.72      10.8 +/-    1.72  0.040 / 0.040
G14     212.5          17.5               18.6 +/-    1.48      43.6 +/-    1.48  0.040 / 0.040
G15     45.6           21.4                8.0 +/-    2.24      17.1 +/-    2.24  0.140 / 0.420
G20     13.1           64.0               10.0 +/-    0.94      11.0 +/-    0.94  0.140 / 0.440
G21     116.2          69.1               12.1 +/-    0.96      12.9 +/-    0.96  0.140 / 0.200
G24     89.8           29.3               13.0 +/-    1.06      23.2 +/-    1.06  0.150 / 0.260
G27     291.6          37.0               11.8 +/-    2.38      18.0 +/-    2.38  0.080 / 0.080
G32     214.0          40.0               14.7 +/-    1.95      21.4 +/-    1.95  0.070 / 0.080