PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2017/12/30-19:42:50
G01     295.2          38.9               10.5 +/-    3.36      15.5 +/-    3.36  0.070 / 0.090
G03     310.8          14.8               10.6 +/-    4.85      26.5 +/-    4.85  0.100 / 0.080
G10     116.8          32.0               11.5 +/-    0.99      19.3 +/-    0.99  0.050 / 0.050
G11     270.2          26.9               12.3 +/-    1.16      23.1 +/-    1.16  0.040 / 0.080
G14     18.4           60.9               10.0 +/-    1.03      11.3 +/-    1.03  0.080 / 0.130
G22     313.0          35.1               10.7 +/-    1.58      16.9 +/-    1.58  0.080 / 0.140
G25     70.4           18.8                9.8 +/-    2.29      22.3 +/-    2.29  0.030 / 0.020
G26     159.5          10.1              -16.2 +/-   24.35     -45.0 +/-   24.35  0.020 / 0.020
G31     149.8          76.2               13.0 +/-    0.65      13.3 +/-    0.65  0.040 / 0.050
G32     47.4           44.8                9.9 +/-    0.70      13.4 +/-    0.70  0.040 / 0.060