PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2017/12/29-16:27:40
G08     314.2          16.2                5.7 +/-    1.70      13.8 +/-    1.70  0.030 / 0.030
G10     321.2          57.9                6.1 +/-    0.75       7.1 +/-    0.75  0.030 / 0.020
G14     215.7          25.8               10.9 +/-    2.64      21.0 +/-    2.64  0.070 / 0.080
G15     46.0           13.6                5.5 +/-    2.44      14.1 +/-    2.44  0.080 / 0.090
G18     33.5           60.4                7.7 +/-    0.95       8.7 +/-    0.95  0.120 / 0.210
G20     81.3           11.2                7.7 +/-    1.81      20.9 +/-    1.81  0.260 / 0.300
G21     129.0          57.0                8.8 +/-    0.37      10.2 +/-    0.37  0.070 / 0.060
G24     81.3           30.4                6.2 +/-    1.09      10.8 +/-    1.09  0.070 / 0.060
G27     280.2          38.0                8.3 +/-    2.07      12.5 +/-    2.07  0.160 / 0.210
G32     219.4          46.6                9.4 +/-    1.41      12.3 +/-    1.41  0.110 / 0.230