PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2019/04/25-09:28:10
G08     261.4          15.7                8.1 +/-    1.94      19.9 +/-    1.94  0.100 / 0.000
G10     73.1           54.5                5.2 +/-    0.67       6.3 +/-    0.67  0.110 / 0.260
G11     306.5          21.2                4.5 +/-    2.19       9.5 +/-    2.19  0.170 / 0.240
G14     283.8          70.0                3.5 +/-    0.49       3.7 +/-    0.49  0.030 / 0.030
G18     307.7          38.7                3.5 +/-    1.05       5.2 +/-    1.05  0.030 / 0.030
G20     101.5          32.2                5.9 +/-    1.04       9.9 +/-    1.04  0.040 / 0.050
G22     299.6          10.9               -0.3 +/-    2.95      -0.9 +/-    2.95  0.040 / 0.060
G27     228.6          12.4                5.1 +/-    2.38      13.4 +/-    2.38  0.150 / 0.380
G31     177.4          36.3                7.1 +/-    1.65      11.1 +/-    1.65  0.220 / 0.380
G32     341.6          72.4                5.3 +/-    0.40       5.6 +/-    0.40  0.180 / 0.430