PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2017/12/12-19:27:40
G01     320.9          11.1               -8.6 +/-   36.48     -23.5 +/-   36.48  0.180 / 0.550
G08     264.9          16.9               11.0 +/-    1.24      26.0 +/-    1.24  0.190 / 0.420
G10     65.3           57.8               10.5 +/-    1.03      12.2 +/-    1.03  0.090 / 0.090
G11     310.1          18.4                9.9 +/-    2.91      22.7 +/-    2.91  0.070 / 0.100
G14     274.1          67.8               11.1 +/-    0.68      11.9 +/-    0.68  0.030 / 0.040
G18     95.3           33.1               10.5 +/-    1.34      17.2 +/-    1.34  0.040 / 0.040
G27     228.7          13.7                9.9 +/-    5.12      25.4 +/-    5.12  0.210 / 0.350
G31     179.3          31.6               12.2 +/-    1.46      20.6 +/-    1.46  0.250 / 0.390
G32     343.9          73.0               10.7 +/-    0.67      11.1 +/-    0.67  0.030 / 0.020