PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2018/01/31-18:42:50
G01     252.9          36.0               13.3 +/-    2.53      20.7 +/-    2.53  0.040 / 0.040
G03     316.1          44.6               10.3 +/-    1.00      14.0 +/-    1.00  0.030 / 0.050
G11     240.5          13.5               11.9 +/-    1.41      30.8 +/-    1.41  0.050 / 0.080
G14     58.1           42.5               10.0 +/-    0.80      14.0 +/-    0.80  0.050 / 0.090
G22     306.0          65.6               10.9 +/-    0.66      11.9 +/-    0.66  0.040 / 0.050
G23     285.9          19.1               11.8 +/-    1.17      26.5 +/-    1.17  0.040 / 0.040
G25     41.2           11.3                9.9 +/-    3.05      26.8 +/-    3.05  0.100 / 0.080
G26     137.6          36.9               16.2 +/-    1.57      24.8 +/-    1.57  0.070 / 0.110
G31     41.2           59.8               10.8 +/-    0.43      12.3 +/-    0.43  0.220 / 0.250
G32     76.4           23.4               11.2 +/-    1.68      22.7 +/-    1.68  0.210 / 0.250