PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2017/12/25-17:28:00
G08     296.2          22.4                6.9 +/-    2.10      14.3 +/-    2.10  0.060 / 0.090
G10     0.8            62.9                7.2 +/-    0.74       8.0 +/-    0.74  0.090 / 0.100
G14     228.1          44.2                9.0 +/-    2.20      12.3 +/-    2.20  0.060 / 0.080
G18     62.5           50.9                8.0 +/-    0.81       9.9 +/-    0.81  0.090 / 0.110
G21     144.2          37.6               10.3 +/-    0.67      15.6 +/-    0.67  0.050 / 0.020
G24     59.2           27.3                7.6 +/-    1.52      14.2 +/-    1.52  0.040 / 0.020
G27     255.5          32.6                6.7 +/-    2.15      11.2 +/-    2.15  0.090 / 0.120
G32     241.5          65.2                9.2 +/-    0.65      10.0 +/-    0.65  0.100 / 0.110