PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2017/12/15-20:12:40
G01     309.4          31.3                9.2 +/-    2.17      15.7 +/-    2.17  0.100 / 0.130
G10     102.9          42.6                9.3 +/-    0.95      13.0 +/-    0.95  0.130 / 0.130
G11     285.7          28.0                7.7 +/-    1.70      14.0 +/-    1.70  0.120 / 0.180
G14     350.8          68.0                7.5 +/-    0.43       8.0 +/-    0.43  0.100 / 0.150
G18     115.8          14.9                9.6 +/-    2.51      23.9 +/-    2.51  0.030 / 0.040
G22     308.5          23.1                8.8 +/-    2.24      18.0 +/-    2.24  0.030 / 0.040
G25     84.6           15.8               10.0 +/-    3.13      24.4 +/-    3.13  0.030 / 0.030
G31     172.0          60.6               12.4 +/-    0.49      14.1 +/-    0.49  0.030 / 0.030
G32     32.0           55.2                7.3 +/-    1.02       8.7 +/-    1.02  0.040 / 0.050