PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2018/12/17-18:12:50
G01     320.8          12.6               -1.9 +/-   32.41      -4.9 +/-   32.41  0.120 / 0.200
G08     261.2          16.5                8.2 +/-    2.54      19.7 +/-    2.54  0.100 / 0.210
G10     69.6           55.9                8.5 +/-    0.52      10.0 +/-    0.52  0.030 / 0.040
G11     307.6          20.7                8.8 +/-    2.68      19.0 +/-    2.68  0.040 / 0.040
G14     278.5          69.1                8.1 +/-    0.69       8.6 +/-    0.69  0.080 / 0.050
G18     308.3          38.3                6.4 +/-    1.78       9.6 +/-    1.78  0.080 / 0.050
G20     99.6           33.5                8.6 +/-    1.24      14.1 +/-    1.24  0.100 / 0.300
G27     231.0          13.7                7.5 +/-    2.53      19.2 +/-    2.53  0.110 / 0.330
G31     180.3          31.6                7.9 +/-    1.81      13.4 +/-    1.81  0.160 / 0.310
G32     348.9          72.3                8.6 +/-    0.60       9.0 +/-    0.60  0.160 / 0.380