PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2017/12/13-17:42:30
G08     310.4          18.4                8.8 +/-    1.61      20.1 +/-    1.61  0.060 / 0.080
G10     329.0          59.4                8.4 +/-    0.52       9.6 +/-    0.52  0.080 / 0.060
G14     217.8          30.2               13.0 +/-    2.28      22.6 +/-    2.28  0.070 / 0.070
G15     46.7           10.2                9.0 +/-    2.41      24.9 +/-    2.41  0.050 / 0.060
G18     40.1           58.7               10.2 +/-    0.80      11.7 +/-    0.80  0.060 / 0.070
G24     76.3           30.6                9.5 +/-    1.09      16.4 +/-    1.09  0.110 / 0.060
G27     274.4          37.7               11.1 +/-    2.49      16.8 +/-    2.49  0.150 / 0.120
G32     222.8          50.4               12.3 +/-    1.78      15.4 +/-    1.78  0.110 / 0.240