PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2017/12/13-19:58:00
G01     316.0          23.7                9.1 +/-    1.36      18.3 +/-    1.36  0.100 / 0.270
G10     89.8           49.6                9.3 +/-    1.26      11.8 +/-    1.26  0.240 / 0.260
G11     296.8          25.7               10.1 +/-    1.47      19.4 +/-    1.47  0.170 / 0.170
G14     321.0          71.0                9.8 +/-    0.46      10.3 +/-    0.46  0.180 / 0.210
G18     108.3          22.5               10.3 +/-    1.22      21.3 +/-    1.22  0.030 / 0.050
G22     303.9          15.1                8.9 +/-    1.32      22.2 +/-    1.32  0.030 / 0.050
G25     94.5           11.7               12.1 +/-    2.18      32.6 +/-    2.18  0.030 / 0.030
G31     176.1          48.5               11.5 +/-    0.92      14.8 +/-    0.92  0.030 / 0.020
G32     17.9           62.9                8.3 +/-    0.58       9.2 +/-    0.58  0.190 / 0.120