PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2019/08/20-23:12:30
G10     313.4          56.8                9.3 +/-    0.76      10.9 +/-    0.76  0.040 / 0.050
G14     212.7          18.3               10.5 +/-    1.24      24.0 +/-    1.24  0.040 / 0.040
G15     45.6           20.6                5.8 +/-    1.26      12.6 +/-    1.26  0.130 / 0.530
G20     14.0           63.9                8.2 +/-    0.54       9.0 +/-    0.54  0.160 / 0.690
G21     117.4          68.6                8.1 +/-    0.69       8.6 +/-    0.69  0.060 / 0.090
G24     89.0           29.4                8.3 +/-    1.04      14.8 +/-    1.04  0.050 / 0.080
G27     290.8          37.1               10.0 +/-    1.74      15.3 +/-    1.74  0.130 / 0.150
G32     214.4          40.4               11.6 +/-    1.19      16.7 +/-    1.19  0.110 / 0.140