PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2019/04/25-15:42:40
G03     185.7          14.0                9.9 +/-   16.71      25.3 +/-   16.71  0.060 / 0.110
G07     300.0          45.5               10.6 +/-    1.80      14.2 +/-    1.80  0.070 / 0.110
G08     137.3          31.9               11.4 +/-    0.79      19.1 +/-    0.79  0.150 / 0.270
G09     319.0          66.3               10.9 +/-    1.31      11.8 +/-    1.31  0.120 / 0.290
G16     42.6           37.5                7.7 +/-    1.02      11.7 +/-    1.02  0.050 / 0.040
G23     128.5          75.0               11.1 +/-    1.01      11.4 +/-    1.01  0.040 / 0.040
G27     96.0           35.4               10.5 +/-    0.83      16.5 +/-    0.83  0.050 / 0.090
G30     278.0          17.0               12.0 +/-    2.07      28.3 +/-    2.07  0.060 / 0.090