PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2018/01/29-17:42:50
G01     293.7          39.3                6.0 +/-    1.23       8.9 +/-    1.23  0.040 / 0.060
G03     311.5          17.0                6.2 +/-    2.25      14.6 +/-    2.25  0.040 / 0.060
G10     117.9          30.9               10.4 +/-    0.58      17.9 +/-    0.58  0.040 / 0.100
G11     269.9          26.4                7.8 +/-    1.28      14.9 +/-    1.28  0.060 / 0.090
G14     19.0           60.7                7.0 +/-    0.51       7.9 +/-    0.51  0.070 / 0.110
G22     313.5          37.1                6.5 +/-    1.16       9.9 +/-    1.16  0.060 / 0.100
G25     69.6           19.0                8.1 +/-    0.38      18.4 +/-    0.38  0.050 / 0.080
G26     157.9          11.5               14.4 +/-    2.07      39.0 +/-    2.07  0.050 / 0.100
G31     139.5          77.6                8.9 +/-    0.92       9.1 +/-    0.92  0.020 / 0.030
G32     49.2           43.3                7.0 +/-    0.33       9.7 +/-    0.33  0.020 / 0.030