PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2017/12/16-19:27:50
G01     319.2          17.2                6.2 +/-    1.24      14.7 +/-    1.24  0.110 / 0.190
G08     258.3          13.5                9.5 +/-    1.67      24.4 +/-    1.67  0.090 / 0.180
G10     78.0           54.2                7.4 +/-    0.48       8.9 +/-    0.48  0.030 / 0.030
G11     304.4          22.3                5.4 +/-    1.48      11.2 +/-    1.48  0.030 / 0.030
G14     295.0          70.5                7.5 +/-    0.75       7.9 +/-    0.75  0.050 / 0.060
G18     101.9          28.0                8.7 +/-    1.15      16.0 +/-    1.15  0.050 / 0.060
G31     177.8          39.7               11.5 +/-    1.17      16.9 +/-    1.17  0.030 / 0.040
G32     3.6            68.5                7.3 +/-    0.60       7.8 +/-    0.60  0.030 / 0.040