PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2019/02/27-12:12:40
G08     291.9          23.7                6.6 +/-    0.79      13.3 +/-    0.79  0.050 / 0.080
G10     9.6            62.9                3.9 +/-    0.61       4.3 +/-    0.61  0.060 / 0.080
G14     229.6          47.5                7.9 +/-    2.22      10.2 +/-    2.22  0.030 / 0.020
G18     317.5          12.8                5.3 +/-    4.43      13.9 +/-    4.43  0.030 / 0.020
G20     65.8           52.0                6.0 +/-    1.15       7.3 +/-    1.15  0.100 / 0.110
G21     145.9          36.1                6.2 +/-    0.51       9.7 +/-    0.51  0.100 / 0.100
G24     54.2           23.9                3.8 +/-    2.17       7.5 +/-    2.17  0.030 / 0.030
G27     257.0          31.8                5.3 +/-    2.10       8.9 +/-    2.10  0.030 / 0.020
G32     243.0          64.2                7.5 +/-    0.78       8.2 +/-    0.78  0.170 / 0.370