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                8.3 +/-    0.89      12.1 +/-    0.89  0.060 / 0.060
G03     316.2          32.7                5.7 +/-    2.16       9.4 +/-    2.16  0.070 / 0.060
G10     131.8          14.6               10.5 +/-    2.26      26.4 +/-    2.26  0.030 / 0.020
G11     247.9          19.0                7.9 +/-    2.43      17.9 +/-    2.43  0.030 / 0.060
G14     47.7           47.8                5.2 +/-    0.61       6.8 +/-    0.61  0.080 / 0.160
G22     313.2          54.4                6.5 +/-    1.78       7.8 +/-    1.78  0.090 / 0.220
G25     48.9           15.5                6.2 +/-    1.70      15.2 +/-    1.70  0.060 / 0.060
G26     147.4          27.2               11.0 +/-    1.63      20.4 +/-    1.63  0.070 / 0.070
G31     49.6           72.6                7.9 +/-    0.28       8.2 +/-    0.28  0.040 / 0.060
G32     66.8           31.0                5.9 +/-    1.68      10.2 +/-    1.68  0.040 / 0.060