PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2017/12/03-22:42:50
G01     253.4          36.3                8.6 +/-    2.01      13.3 +/-    2.01  0.040 / 0.040
G03     316.2          41.3                7.4 +/-    0.96      10.5 +/-    0.96  0.040 / 0.030
G11     239.0          13.9                7.9 +/-    1.61      20.2 +/-    1.61  0.200 / 0.260
G14     58.6           41.6                6.9 +/-    1.50       9.8 +/-    1.50  0.100 / 0.290
G22     307.4          63.4                7.2 +/-    0.75       7.9 +/-    0.75  0.020 / 0.030
G23     284.8          17.3                9.0 +/-    2.28      21.2 +/-    2.28  0.040 / 0.030
G25     40.9           10.9                7.1 +/-    3.57      19.3 +/-    3.57  0.070 / 0.090
G26     140.9          35.4               12.1 +/-    1.26      19.1 +/-    1.26  0.050 / 0.090
G31     40.9           63.3                6.6 +/-    0.51       7.3 +/-    0.51  0.110 / 0.090
G32     75.1           25.2                7.2 +/-    1.94      14.0 +/-    1.94  0.080 / 0.090