PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2017/12/29-17:12:30
G08     295.7          22.4                6.1 +/-    2.28      12.7 +/-    2.28  0.030 / 0.020
G10     2.1            62.9                6.4 +/-    1.02       7.0 +/-    1.02  0.020 / 0.020
G14     228.6          44.7                9.0 +/-    2.03      12.2 +/-    2.03  0.090 / 0.120
G18     63.4           50.5                6.7 +/-    1.02       8.4 +/-    1.02  0.070 / 0.120
G21     144.6          37.3                8.4 +/-    0.73      12.9 +/-    0.73  0.080 / 0.100
G24     58.6           27.1                7.4 +/-    0.91      13.9 +/-    0.91  0.080 / 0.100
G27     254.8          32.3                7.7 +/-    2.20      12.9 +/-    2.20  0.110 / 0.090
G32     242.7          65.8                8.5 +/-    0.53       9.2 +/-    0.53  0.120 / 0.100