PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2018/12/08-14:57:40
G10     253.7          29.8                7.9 +/-    1.04      13.8 +/-    1.04  0.080 / 0.110
G13     50.3           27.4                8.3 +/-    1.91      15.3 +/-    1.91  0.080 / 0.110
G15     81.5           57.5                9.5 +/-    0.85      11.0 +/-    0.85  0.040 / 0.050
G16     293.5          14.8                2.9 +/-    3.20       7.3 +/-    3.20  0.040 / 0.050
G20     275.0          53.2               11.5 +/-    1.13      14.0 +/-    1.13  0.070 / 0.180
G21     343.9          64.6                7.9 +/-    1.03       8.7 +/-    1.03  0.100 / 0.190
G26     267.0          13.9                4.7 +/-    1.45      11.9 +/-    1.45  0.050 / 0.070
G29     164.4          44.6               11.9 +/-    1.43      16.2 +/-    1.43  0.040 / 0.080