PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2017/12/29-20:58:00
G01     252.8          36.0               12.1 +/-    2.20      18.8 +/-    2.20  0.110 / 0.180
G03     316.1          42.9                9.4 +/-    1.04      13.0 +/-    1.04  0.110 / 0.140
G11     239.3          13.6               10.9 +/-    1.45      28.2 +/-    1.45  0.040 / 0.030
G14     58.8           41.8                7.2 +/-    1.23      10.2 +/-    1.23  0.030 / 0.040
G22     306.6          64.5               10.3 +/-    0.46      11.2 +/-    0.46  0.030 / 0.030
G23     285.5          18.2               11.3 +/-    1.05      26.1 +/-    1.05  0.040 / 0.030
G25     40.8           11.0                8.7 +/-    4.14      23.6 +/-    4.14  0.120 / 0.300
G26     139.0          36.4               11.8 +/-    0.71      18.2 +/-    0.71  0.080 / 0.260
G31     40.9           61.3                8.5 +/-    0.42       9.6 +/-    0.42  0.080 / 0.080
G32     76.0           24.1                7.8 +/-    1.64      15.5 +/-    1.64  0.070 / 0.070