PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2019/08/13-23:42:40
G10     314.4          57.0                7.4 +/-    1.44       8.6 +/-    1.44  0.040 / 0.040
G14     212.8          19.0               11.3 +/-    2.38      25.6 +/-    2.38  0.040 / 0.050
G15     45.6           19.9                7.1 +/-    2.10      15.6 +/-    2.10  0.360 / 0.650
G20     14.9           63.8                7.5 +/-    0.48       8.3 +/-    0.48  0.280 / 0.720
G21     118.6          68.1                9.4 +/-    1.05      10.1 +/-    1.05  0.200 / 0.230
G24     88.2           29.5               10.9 +/-    0.92      19.3 +/-    0.92  0.140 / 0.200
G27     290.1          37.2                9.4 +/-    3.55      14.4 +/-    3.55  0.070 / 0.090
G32     214.8          40.8               10.1 +/-    1.52      14.4 +/-    1.52  0.050 / 0.070