PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2018/12/12-18:12:50
G08     270.0          20.3                8.1 +/-    3.52      17.7 +/-    3.52  0.090 / 0.230
G10     52.5           59.7                8.8 +/-    0.62      10.0 +/-    0.62  0.080 / 0.240
G11     313.9          15.0               -5.6 +/-   15.41     -13.9 +/-   15.41  0.030 / 0.030
G14     256.8          63.7                9.8 +/-    0.78      10.8 +/-    0.78  0.030 / 0.030
G18     313.8          30.4               10.3 +/-    1.27      17.9 +/-    1.27  0.140 / 0.480
G20     90.4           39.8                9.4 +/-    0.59      13.8 +/-    0.59  0.160 / 0.560
G21     153.1          17.4                9.2 +/-    2.38      21.6 +/-    2.38  0.040 / 0.060
G27     238.0          19.8               10.8 +/-    1.09      23.9 +/-    1.09  0.040 / 0.060
G31     181.6          22.4               11.4 +/-    2.57      23.7 +/-    2.57  0.110 / 0.130
G32     315.4          75.8               10.2 +/-    0.50      10.5 +/-    0.50  0.110 / 0.200