PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2018/12/31-17:27:50
G01     319.5          17.3                5.9 +/-    1.78      13.9 +/-    1.78  0.090 / 0.160
G08     256.2          13.8                8.7 +/-    1.60      22.2 +/-    1.60  0.090 / 0.160
G10     78.7           53.0                9.3 +/-    0.53      11.4 +/-    0.53  0.080 / 0.270
G11     302.9          23.5                7.8 +/-    2.20      15.8 +/-    2.20  0.110 / 0.200
G14     295.6          71.0                9.3 +/-    0.68       9.8 +/-    0.68  0.040 / 0.050
G18     303.1          42.9               10.4 +/-    1.21      14.5 +/-    1.21  0.040 / 0.060
G20     104.6          29.6               10.1 +/-    1.42      17.9 +/-    1.42  0.030 / 0.030
G27     227.2          10.2               10.1 +/-    2.74      28.0 +/-    2.74  0.040 / 0.040
G31     180.1          36.8               11.5 +/-    1.58      17.7 +/-    1.58  0.180 / 0.310
G32     1.8            69.0                9.8 +/-    0.99      10.4 +/-    0.99  0.260 / 0.380