PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2018/05/03-09:58:00
G01     320.0          15.2                2.6 +/-    3.51       6.4 +/-    3.51  0.040 / 0.070
G08     263.7          14.6                4.8 +/-    1.18      12.1 +/-    1.18  0.040 / 0.050
G10     74.5           55.1                3.3 +/-    0.32       3.9 +/-    0.32  0.110 / 0.230
G11     307.0          20.4                5.0 +/-    2.52      11.0 +/-    2.52  0.280 / 0.330
G14     278.4          66.6                3.7 +/-    0.65       4.0 +/-    0.65  0.180 / 0.500
G18     307.9          37.1                4.1 +/-    2.44       6.3 +/-    2.44  0.180 / 0.440
G22     300.3          12.7                3.6 +/-    6.21       9.6 +/-    6.21  0.100 / 0.290
G27     225.8          10.6                4.9 +/-    3.58      13.6 +/-    3.58  0.110 / 0.320
G31     175.0          40.3                5.5 +/-    0.59       7.9 +/-    0.59  0.040 / 0.040
G32     5.1            68.7                5.1 +/-    0.48       5.4 +/-    0.48  0.040 / 0.030