PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2017/12/16-21:27:50
G01     266.0          40.1               10.0 +/-    1.08      14.5 +/-    1.08  0.040 / 0.050
G03     316.2          32.7                6.3 +/-    3.24      10.5 +/-    3.24  0.050 / 0.050
G10     131.8          14.6               10.4 +/-    1.64      26.1 +/-    1.64  0.050 / 0.070
G11     247.9          19.0                8.1 +/-    1.32      18.3 +/-    1.32  0.060 / 0.090
G14     47.7           47.8                5.7 +/-    0.59       7.4 +/-    0.59  0.090 / 0.400
G22     313.2          54.4                4.0 +/-    1.18       4.8 +/-    1.18  0.090 / 0.310
G25     48.9           15.5                6.2 +/-    2.18      15.3 +/-    2.18  0.090 / 0.100
G26     147.4          27.2               12.0 +/-    1.05      22.2 +/-    1.05  0.070 / 0.110
G31     49.6           72.6                7.1 +/-    0.27       7.4 +/-    0.27  0.030 / 0.030
G32     66.8           31.0                6.2 +/-    0.41      10.7 +/-    0.41  0.030 / 0.040