PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2017/12/25-20:43:10
G01     270.4          40.8               12.5 +/-    2.53      17.9 +/-    2.53  0.050 / 0.050
G03     315.9          30.1               10.9 +/-    1.23      19.0 +/-    1.23  0.050 / 0.060
G10     129.9          17.2               13.7 +/-    1.22      32.3 +/-    1.22  0.130 / 0.150
G11     251.1          20.5               11.7 +/-    1.89      25.4 +/-    1.89  0.100 / 0.180
G14     43.7           49.9               10.0 +/-    0.84      12.6 +/-    0.84  0.030 / 0.020
G22     314.0          51.6               10.7 +/-    0.97      13.2 +/-    0.97  0.030 / 0.020
G25     52.0           16.7                9.6 +/-    2.11      23.0 +/-    2.11  0.070 / 0.070
G26     149.1          24.6               16.9 +/-    1.81      33.2 +/-    1.81  0.060 / 0.070
G31     55.9           75.2               11.1 +/-    0.37      11.5 +/-    0.37  0.050 / 0.060
G32     64.1           32.8               10.4 +/-    1.62      17.2 +/-    1.62  0.040 / 0.060