PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2019/04/29-09:12:50
G01     320.3          14.9               -4.2 +/-   22.50     -10.4 +/-   22.50  0.180 / 0.270
G08     261.4          15.6                4.8 +/-    1.27      11.9 +/-    1.27  0.150 / 0.400
G10     73.4           54.4                5.8 +/-    0.56       7.0 +/-    0.56  0.110 / 0.340
G11     306.4          21.3                4.8 +/-    1.99      10.1 +/-    1.99  0.110 / 0.270
G14     284.2          70.0                4.3 +/-    0.55       4.6 +/-    0.55  0.030 / 0.030
G18     307.6          38.8                5.2 +/-    1.08       7.7 +/-    1.08  0.040 / 0.030
G20     101.6          32.1                4.7 +/-    1.13       7.8 +/-    1.13  0.230 / 0.280
G27     228.5          12.3                4.1 +/-    1.93      11.0 +/-    1.93  0.130 / 0.320
G31     177.3          36.6                7.4 +/-    0.89      11.5 +/-    0.89  0.040 / 0.050
G32     342.8          72.3                6.7 +/-    0.46       7.0 +/-    0.46  0.040 / 0.060