PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2019/04/10-10:12:50
G08     268.4          19.0                6.6 +/-    3.62      14.9 +/-    3.62  0.030 / 0.020
G10     59.4           58.1                6.2 +/-    0.49       7.1 +/-    0.49  0.030 / 0.030
G14     263.6          66.1                6.1 +/-    0.80       6.7 +/-    0.80  0.150 / 0.440
G18     312.6          32.5                5.2 +/-    1.06       8.7 +/-    1.06  0.160 / 0.350
G20     93.9           37.5                7.7 +/-    1.21      11.7 +/-    1.21  0.150 / 0.280
G21     154.1          15.1                5.8 +/-    2.82      14.4 +/-    2.82  0.130 / 0.200
G24     39.9           9.9                 3.1 +/-    1.22       8.6 +/-    1.22  0.030 / 0.020
G27     234.7          17.7                5.8 +/-    2.50      13.6 +/-    2.50  0.040 / 0.030
G31     179.4          27.6                6.2 +/-    1.59      11.5 +/-    1.59  0.040 / 0.050
G32     309.6          74.4                4.5 +/-    0.97       4.6 +/-    0.97  0.040 / 0.050