PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2017/12/16-14:58:00
G10     244.2          20.3                5.8 +/-    1.56      12.7 +/-    1.56  0.050 / 0.090
G13     62.6           34.6                4.8 +/-    0.82       7.7 +/-    0.82  0.060 / 0.060
G15     100.1          56.8                6.6 +/-    0.56       7.7 +/-    0.56  0.170 / 0.200
G16     307.4          13.2                5.1 +/-    1.51      13.4 +/-    1.51  0.110 / 0.210
G18     259.6          52.7                7.3 +/-    0.82       9.0 +/-    0.82  0.080 / 0.300
G20     34.2           58.3                4.3 +/-    0.45       4.9 +/-    0.45  0.090 / 0.300
G21     331.6          59.0                4.2 +/-    1.06       4.8 +/-    1.06  0.040 / 0.050
G26     278.0          17.9                5.3 +/-    1.26      12.3 +/-    1.26  0.030 / 0.040
G29     159.9          54.6                6.7 +/-    0.54       8.0 +/-    0.54  0.110 / 0.120