PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2019/08/31-23:28:00
G08     298.6          21.3                8.4 +/-    1.88      17.8 +/-    1.88  0.040 / 0.080
G10     7.9            62.7                7.6 +/-    0.81       8.5 +/-    0.81  0.050 / 0.050
G14     227.7          43.1               10.7 +/-    1.77      14.9 +/-    1.77  0.090 / 0.140
G20     64.0           52.5                9.3 +/-    1.10      11.4 +/-    1.10  0.110 / 0.130
G21     146.1          42.9               10.9 +/-    0.99      15.2 +/-    0.99  0.040 / 0.030
G24     58.5           26.9                7.8 +/-    1.71      14.6 +/-    1.71  0.040 / 0.030
G27     256.4          32.9                9.4 +/-    2.07      15.6 +/-    2.07  0.130 / 0.240
G32     242.1          66.7                9.5 +/-    0.40      10.2 +/-    0.40  0.100 / 0.230