PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2018/02/17-15:28:10
G01     315.9          24.0                8.6 +/-    2.49      17.2 +/-    2.49  0.030 / 0.060
G10     90.6           49.1                9.3 +/-    0.96      11.9 +/-    0.96  0.050 / 0.050
G11     298.4          24.4                8.6 +/-    2.32      17.1 +/-    2.32  0.110 / 0.210
G14     316.8          70.5                9.0 +/-    0.37       9.5 +/-    0.37  0.120 / 0.170
G22     304.7          17.3                6.6 +/-    2.58      15.5 +/-    2.58  0.140 / 0.460
G25     95.1           11.9               10.0 +/-    1.86      26.7 +/-    1.86  0.150 / 0.450
G31     173.2          51.2               12.7 +/-    1.44      15.8 +/-    1.44  0.040 / 0.060
G32     21.5           61.3                8.2 +/-    0.64       9.3 +/-    0.64  0.050 / 0.050