PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2017/12/06-00:27:40
G03     226.9          64.6                6.9 +/-    0.99       7.6 +/-    0.99  0.040 / 0.040
G07     251.5          10.9               -5.3 +/-   14.26     -14.5 +/-   14.26  0.040 / 0.040
G09     306.4          22.0                5.1 +/-    2.20      10.8 +/-    2.20  0.030 / 0.030
G14     104.3          10.5                6.7 +/-    2.97      18.4 +/-    2.97  0.040 / 0.030
G16     125.5          62.4                7.9 +/-    0.36       8.8 +/-    0.36  0.110 / 0.200
G22     192.7          50.5                7.4 +/-    0.46       9.2 +/-    0.46  0.150 / 0.200
G23     322.8          52.6                6.2 +/-    0.73       7.6 +/-    0.73  0.090 / 0.160
G26     63.8           50.8                5.2 +/-    1.19       6.5 +/-    1.19  0.100 / 0.110
G31     54.3           17.7                3.8 +/-    3.38       8.9 +/-    3.38  0.060 / 0.250