PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2018/02/13-15:12:50
G01     320.7          12.1                1.1 +/-   16.52       3.0 +/-   16.52  0.090 / 0.270
G08     266.1          16.3                7.4 +/-    6.41      17.8 +/-    6.41  0.120 / 0.150
G10     67.7           57.1                6.6 +/-    0.70       7.7 +/-    0.70  0.070 / 0.070
G11     310.6          17.5                5.8 +/-    2.19      13.7 +/-    2.19  0.070 / 0.080
G14     274.2          67.1                7.4 +/-    0.60       8.0 +/-    0.60  0.030 / 0.040
G27     228.1          12.9                5.6 +/-    2.78      14.7 +/-    2.78  0.030 / 0.040
G31     177.2          35.0                7.9 +/-    1.37      12.5 +/-    1.37  0.030 / 0.040
G32     353.1          71.7                6.3 +/-    0.44       6.6 +/-    0.44  0.030 / 0.030