PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2018/12/27-15:28:00
G08     315.7          15.8                3.3 +/-    2.03       8.1 +/-    2.03  0.040 / 0.040
G10     315.5          57.0                6.6 +/-    1.34       7.7 +/-    1.34  0.040 / 0.040
G14     213.3          22.4                6.9 +/-    1.28      14.4 +/-    1.28  0.180 / 0.280
G15     45.7           19.3                4.6 +/-    2.35      10.3 +/-    2.35  0.180 / 0.250
G20     18.2           63.5                7.9 +/-    0.82       8.7 +/-    0.82  0.040 / 0.050
G21     123.4          61.9                9.7 +/-    0.48      10.8 +/-    0.48  0.030 / 0.030
G24     80.9           28.3                9.7 +/-    1.83      17.6 +/-    1.83  0.150 / 0.190
G27     290.6          36.1                8.8 +/-    1.34      13.8 +/-    1.34  0.350 / 0.260
G32     216.1          41.4                7.1 +/-    1.02      10.0 +/-    1.02  0.090 / 0.110