PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2019/08/18-23:12:40
G10     307.2          55.3                9.6 +/-    0.75      11.4 +/-    0.75  0.250 / 0.730
G14     211.5          14.9               15.5 +/-    3.38      38.8 +/-    3.38  0.240 / 0.440
G15     45.7           23.8                7.2 +/-    0.63      14.4 +/-    0.63  0.070 / 0.080
G20     5.4            64.6                9.4 +/-    0.57      10.3 +/-    0.57  0.060 / 0.080
G21     109.2          71.5                9.7 +/-    1.05      10.1 +/-    1.05  0.040 / 0.050
G24     93.2           28.4                9.6 +/-    1.19      17.5 +/-    1.19  0.040 / 0.040
G27     295.4          36.1               11.5 +/-    0.92      17.9 +/-    0.92  0.030 / 0.040
G32     212.5          36.7               14.1 +/-    1.86      21.8 +/-    1.86  0.040 / 0.040