PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2017/12/25-19:57:50
G01     298.1          37.9               11.8 +/-    1.97      17.8 +/-    1.97  0.040 / 0.080
G03     309.8          12.6               10.9 +/-    1.89      28.8 +/-    1.89  0.050 / 0.100
G10     114.7          33.9               14.7 +/-    1.48      23.8 +/-    1.48  0.100 / 0.110
G11     272.8          27.4               12.0 +/-    1.03      22.1 +/-    1.03  0.080 / 0.150
G14     14.5           62.2               11.0 +/-    0.97      12.2 +/-    0.97  0.020 / 0.020
G22     312.4          32.9               10.3 +/-    1.76      17.1 +/-    1.76  0.020 / 0.020
G25     72.9           18.5               12.6 +/-    2.67      28.7 +/-    2.67  0.040 / 0.050
G31     157.2          73.7               13.9 +/-    0.60      14.4 +/-    0.60  0.030 / 0.040
G32     44.8           46.6               10.7 +/-    0.62      14.1 +/-    0.62  0.050 / 0.040