PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2018/02/17-15:57:50
G01     306.9          33.3                7.5 +/-    2.09      12.2 +/-    2.09  0.060 / 0.110
G10     106.3          40.2                9.8 +/-    1.26      14.2 +/-    1.26  0.060 / 0.100
G11     284.5          27.1                8.0 +/-    2.28      14.9 +/-    2.28  0.040 / 0.030
G14     353.6          67.2                6.8 +/-    0.38       7.3 +/-    0.38  0.040 / 0.030
G22     310.1          27.5                7.9 +/-    1.52      14.6 +/-    1.52  0.110 / 0.140
G25     82.5           16.8               11.0 +/-    1.50      26.2 +/-    1.50  0.130 / 0.120
G31     165.1          65.9               11.2 +/-    0.39      12.1 +/-    0.39  0.070 / 0.050
G32     37.3           51.6                9.2 +/-    1.78      11.4 +/-    1.78  0.060 / 0.050