PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2019/03/20-11:27:50
G08     272.8          20.8                6.2 +/-    2.46      13.4 +/-    2.46  0.160 / 0.210
G10     49.7           60.0                4.2 +/-    0.86       4.8 +/-    0.86  0.090 / 0.180
G14     253.7          62.9                5.2 +/-    0.57       5.8 +/-    0.57  0.020 / 0.020
G18     314.6          28.7                3.7 +/-    1.24       6.7 +/-    1.24  0.020 / 0.020
G20     88.7           40.8                4.0 +/-    1.02       5.7 +/-    1.02  0.050 / 0.040
G21     152.8          19.0                3.8 +/-    2.30       8.5 +/-    2.30  0.050 / 0.050
G24     41.9           13.1                1.9 +/-    3.28       5.1 +/-    3.28  0.030 / 0.020
G27     238.9          21.0                5.4 +/-    1.98      11.5 +/-    1.98  0.030 / 0.020
G31     180.9          22.0                4.4 +/-    1.37       9.3 +/-    1.37  0.220 / 0.300
G32     293.3          74.4                5.0 +/-    0.52       5.1 +/-    0.52  0.090 / 0.220