PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2018/05/12-09:28:10
G01     319.0          18.1                4.7 +/-    1.11      10.9 +/-    1.11  0.040 / 0.050
G08     260.0          13.0                7.3 +/-    1.18      19.0 +/-    1.18  0.040 / 0.060
G10     80.1           53.2                4.9 +/-    0.32       6.0 +/-    0.32  0.070 / 0.240
G11     303.8          22.3                3.8 +/-    1.70       7.9 +/-    1.70  0.070 / 0.210
G14     286.7          67.8                5.1 +/-    0.56       5.4 +/-    0.56  0.050 / 0.040
G18     304.9          39.8                6.7 +/-    0.81       9.8 +/-    0.81  0.040 / 0.040
G22     302.0          14.7                1.7 +/-    3.01       4.3 +/-    3.01  0.110 / 0.170
G31     173.9          44.3                7.5 +/-    1.18      10.2 +/-    1.18  0.120 / 0.180
G32     12.0           66.1                4.6 +/-    0.51       5.0 +/-    0.51  0.070 / 0.210