PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2019/04/14-10:12:50
G01     320.5          14.3               -5.4 +/-   24.90     -13.6 +/-   24.90  0.120 / 0.330
G08     261.5          15.9                7.8 +/-    1.56      18.9 +/-    1.56  0.120 / 0.290
G10     72.3           54.8                4.1 +/-    0.63       4.9 +/-    0.63  0.030 / 0.020
G11     306.8          21.1                4.2 +/-    2.60       9.0 +/-    2.60  0.020 / 0.020
G14     282.6          69.9                3.8 +/-    0.77       4.1 +/-    0.77  0.040 / 0.020
G18     307.9          38.6                4.2 +/-    0.91       6.3 +/-    0.91  0.040 / 0.020
G20     101.0          32.5                3.9 +/-    0.51       6.4 +/-    0.51  0.140 / 0.210
G27     229.1          12.7                4.4 +/-    2.28      11.6 +/-    2.28  0.170 / 0.240
G31     177.8          35.5                6.6 +/-    1.50      10.4 +/-    1.50  0.040 / 0.040
G32     336.5          72.8                5.1 +/-    0.64       5.3 +/-    0.64  0.040 / 0.050