PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2019/04/22-09:43:00
G01     320.2          15.4                2.6 +/-    1.36       6.5 +/-    1.36  0.030 / 0.040
G08     260.6          15.3                3.8 +/-    1.34       9.3 +/-    1.34  0.040 / 0.040
G10     74.4           54.1                4.7 +/-    0.57       5.6 +/-    0.57  0.130 / 0.480
G11     305.8          21.7                3.3 +/-    1.25       6.9 +/-    1.25  0.140 / 0.430
G14     286.1          70.3                4.1 +/-    0.83       4.4 +/-    0.83  0.110 / 0.400
G18     307.0          39.4                3.1 +/-    0.92       4.6 +/-    0.92  0.140 / 0.370
G20     102.2          31.6                6.1 +/-    1.04      10.4 +/-    1.04  0.040 / 0.060
G27     228.1          11.9                2.7 +/-    3.40       7.4 +/-    3.40  0.050 / 0.050
G31     177.3          37.1                5.7 +/-    1.23       8.7 +/-    1.23  0.070 / 0.280
G32     343.6          72.1                4.9 +/-    0.51       5.1 +/-    0.51  0.080 / 0.250