PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2018/12/19-14:43:00
G10     267.1          38.7                4.7 +/-    0.61       6.9 +/-    0.61  0.040 / 0.040
G13     41.8           17.9                4.5 +/-    2.81      10.3 +/-    2.81  0.040 / 0.040
G15     60.0           49.8                5.6 +/-    0.70       7.1 +/-    0.70  0.130 / 0.270
G16     280.9          12.0                4.1 +/-    3.94      11.0 +/-    3.94  0.120 / 0.320
G20     297.8          60.4                5.2 +/-    0.94       5.9 +/-    0.94  0.300 / 0.250
G21     14.3           73.0                5.9 +/-    0.49       6.2 +/-    0.49  0.190 / 0.260
G24     116.4          14.6                8.7 +/-    1.45      21.9 +/-    1.45  0.070 / 0.060
G27     319.8          16.6                4.1 +/-    3.74       9.8 +/-    3.74  0.080 / 0.070
G29     166.7          29.7                4.7 +/-    1.53       8.3 +/-    1.53  0.170 / 0.490