PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2019/08/13-22:42:30
G10     275.0          43.7                9.6 +/-    1.06      13.1 +/-    1.06  0.090 / 0.050
G13     38.9           12.1                7.5 +/-    2.14      20.0 +/-    2.14  0.090 / 0.050
G15     53.3           43.7                9.4 +/-    1.09      12.9 +/-    1.09  0.130 / 0.300
G20     311.5          62.8                8.7 +/-    0.66       9.7 +/-    0.66  0.540 / 0.480
G21     19.4           75.0                9.3 +/-    0.76       9.6 +/-    0.76  0.030 / 0.060
G24     116.0          17.9               11.0 +/-    1.40      25.4 +/-    1.40  0.040 / 0.060
G27     315.7          23.4                7.6 +/-    1.24      15.5 +/-    1.24  0.240 / 0.350
G29     167.7          24.5               10.3 +/-    1.95      20.4 +/-    1.95  0.250 / 0.270
G32     205.2          14.6               12.2 +/-    2.39      30.7 +/-    2.39  0.080 / 0.170