PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2017/12/12-21:12:50
G01     285.6          40.9                3.6 +/-    1.32       5.2 +/-    1.32  0.050 / 0.070
G03     313.2          20.1                9.5 +/-    4.11      20.9 +/-    4.11  0.050 / 0.080
G10     122.7          26.2               11.8 +/-    1.93      22.4 +/-    1.93  0.020 / 0.050
G11     261.5          25.0               10.6 +/-    5.23      20.7 +/-    5.23  0.030 / 0.020
G14     30.2           56.3                9.9 +/-    0.98      11.7 +/-    0.98  0.090 / 0.140
G22     314.2          41.2                9.9 +/-    1.01      14.1 +/-    1.01  0.070 / 0.190
G25     62.4           18.7               11.0 +/-    1.28      24.9 +/-    1.28  0.050 / 0.050
G26     156.0          15.4               13.8 +/-    2.89      34.0 +/-    2.89  0.050 / 0.050
G31     117.1          80.8               12.7 +/-    0.66      12.9 +/-    0.66  0.050 / 0.080
G32     54.0           40.2                9.7 +/-    1.37      14.1 +/-    1.37  0.070 / 0.100