PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2017/11/12-17:57:40
G10     259.9          33.0               10.0 +/-    1.76      16.5 +/-    1.76  0.150 / 0.320
G13     46.3           24.6                9.1 +/-    0.86      18.0 +/-    0.86  0.150 / 0.460
G15     66.8           52.4                9.6 +/-    0.44      11.8 +/-    0.44  0.040 / 0.090
G16     291.9          12.3                8.4 +/-    2.36      22.2 +/-    2.36  0.040 / 0.080
G18     288.9          62.6                9.5 +/-    0.58      10.6 +/-    0.58  0.050 / 0.050
G20     49.0           41.4                8.5 +/-    0.54      12.0 +/-    0.54  0.040 / 0.050
G21     357.7          69.5               10.1 +/-    0.72      10.7 +/-    0.72  0.110 / 0.420
G26     262.3          11.0                8.2 +/-    1.32      22.5 +/-    1.32  0.110 / 0.480
G27     320.6          14.7                7.0 +/-    1.51      17.5 +/-    1.51  0.170 / 0.380
G29     164.5          32.7               11.9 +/-    1.40      19.7 +/-    1.40  0.160 / 0.430