PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2019/05/07-08:43:10
G01     319.9          16.4                1.7 +/-    1.78       4.1 +/-    1.78  0.110 / 0.280
G08     260.1          14.8                4.8 +/-    1.66      12.0 +/-    1.66  0.210 / 0.320
G10     76.2           53.5                3.3 +/-    0.52       4.0 +/-    0.52  0.040 / 0.030
G11     305.0          22.1                2.5 +/-    1.74       5.2 +/-    1.74  0.040 / 0.040
G14     289.1          70.5                4.3 +/-    0.64       4.5 +/-    0.64  0.230 / 0.400
G18     306.2          40.0                4.3 +/-    1.39       6.2 +/-    1.39  0.230 / 0.290
G20     103.1          30.9                5.9 +/-    1.14      10.1 +/-    1.14  0.040 / 0.060
G27     227.2          11.1                2.5 +/-    2.59       6.9 +/-    2.59  0.050 / 0.050
G31     176.7          38.7                5.4 +/-    1.32       8.0 +/-    1.32  0.110 / 0.260
G32     349.1          71.4                4.8 +/-    0.65       5.1 +/-    0.65  0.110 / 0.250