PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2017/12/17-20:58:00
G01     282.2          41.2               13.0 +/-    3.81      18.6 +/-    3.81  0.040 / 0.070
G03     314.0          22.4               11.4 +/-    2.60      23.6 +/-    2.60  0.050 / 0.060
G10     124.5          24.2               13.6 +/-    1.70      27.1 +/-    1.70  0.070 / 0.120
G11     259.1          24.1               12.8 +/-    4.25      25.6 +/-    4.25  0.080 / 0.150
G14     33.4           54.9                9.9 +/-    1.53      11.8 +/-    1.53  0.020 / 0.020
G22     314.4          43.6               11.0 +/-    0.98      15.1 +/-    0.98  0.020 / 0.020
G25     60.0           18.5                7.9 +/-    1.28      18.1 +/-    1.28  0.040 / 0.050
G26     154.4          17.5               14.0 +/-    3.38      32.9 +/-    3.38  0.040 / 0.050
G31     97.6           80.9               12.1 +/-    0.63      12.3 +/-    0.63  0.040 / 0.060
G32     56.4           38.5                9.9 +/-    1.36      14.8 +/-    1.36  0.040 / 0.050