PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2019/03/29-18:13:00
G07     321.3          54.4               11.7 +/-    0.69      14.0 +/-    0.69  0.050 / 0.050
G08     117.7          45.5               14.3 +/-    0.76      19.1 +/-    0.76  0.040 / 0.050
G09     268.9          82.5               10.3 +/-    0.82      10.4 +/-    0.82  0.030 / 0.020
G16     42.8           22.4                8.7 +/-    2.01      18.0 +/-    2.01  0.030 / 0.020
G23     149.6          57.1               14.2 +/-    0.81      16.6 +/-    0.81  0.060 / 0.070
G27     72.7           37.5               11.7 +/-    0.63      17.8 +/-    0.63  0.050 / 0.060
G28     227.2          14.6               10.4 +/-   15.26      26.1 +/-   15.26  0.260 / 0.380
G30     291.6          27.2               10.0 +/-    2.40      18.7 +/-    2.40  0.230 / 0.280