PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2017/12/15-16:13:10
G10     274.8          41.9               10.5 +/-    1.74      14.9 +/-    1.74  0.120 / 0.140
G13     39.5           13.7                5.8 +/-    1.19      14.9 +/-    1.19  0.080 / 0.120
G15     52.2           41.7                7.7 +/-    0.41      10.9 +/-    0.41  0.120 / 0.280
G18     322.1          67.0                7.6 +/-    0.94       8.2 +/-    0.94  0.120 / 0.350
G20     58.2           32.0                6.6 +/-    0.88      11.1 +/-    0.88  0.200 / 0.390
G21     48.6           75.2               11.2 +/-    0.77      11.5 +/-    0.77  0.160 / 0.300
G24     115.3          18.1               11.1 +/-    1.51      25.6 +/-    1.51  0.120 / 0.300
G27     314.0          25.3                8.2 +/-    1.54      16.0 +/-    1.54  0.070 / 0.220
G29     166.7          20.0               11.9 +/-    1.40      26.2 +/-    1.40  0.030 / 0.040
G32     205.9          15.0               12.1 +/-    2.54      30.2 +/-    2.54  0.040 / 0.040