PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2017/12/14-18:12:30
G08     295.9          22.6                8.2 +/-    1.40      16.9 +/-    1.40  0.070 / 0.090
G10     0.7            62.9                7.6 +/-    0.70       8.4 +/-    0.70  0.060 / 0.110
G14     228.1          44.5               10.5 +/-    1.34      14.3 +/-    1.34  0.030 / 0.040
G18     62.3           51.1                7.9 +/-    0.30       9.9 +/-    0.30  0.040 / 0.030
G24     59.3           27.4                7.4 +/-    0.41      13.8 +/-    0.41  0.040 / 0.040
G27     255.4          32.6                9.3 +/-    1.03      15.4 +/-    1.03  0.040 / 0.040
G32     241.3          64.8                9.8 +/-    1.21      10.7 +/-    1.21  0.050 / 0.090