PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2017/12/07-17:57:40
G08     313.7          16.6                6.6 +/-    2.02      15.7 +/-    2.02  0.050 / 0.070
G10     321.1          57.9                7.7 +/-    0.96       8.9 +/-    0.96  0.050 / 0.060
G14     215.7          26.3               13.0 +/-    3.16      24.8 +/-    3.16  0.050 / 0.080
G15     46.0           13.8                6.4 +/-    1.91      16.3 +/-    1.91  0.070 / 0.100
G18     32.7           60.6                8.9 +/-    0.74      10.1 +/-    0.74  0.340 / 0.530
G20     81.6           10.4               10.1 +/-    6.17      27.9 +/-    6.17  0.480 / 0.480
G21     129.0          56.5               10.8 +/-    0.48      12.7 +/-    0.48  0.090 / 0.050
G24     81.5           30.4                9.1 +/-    1.20      15.8 +/-    1.20  0.090 / 0.060
G27     280.1          38.1                9.1 +/-    2.12      13.7 +/-    2.12  0.030 / 0.040
G32     219.4          46.0               12.1 +/-    1.45      16.0 +/-    1.45  0.040 / 0.040