PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2017/12/15-21:28:10
G01     267.9          40.4               11.9 +/-    2.36      17.2 +/-    2.36  0.030 / 0.050
G03     316.1          31.3                9.2 +/-    1.70      15.7 +/-    1.70  0.040 / 0.060
G10     131.0          15.8                8.1 +/-    0.98      19.9 +/-    0.98  0.050 / 0.090
G11     249.1          19.7               10.5 +/-    1.52      23.4 +/-    1.52  0.070 / 0.090
G14     46.1           48.6                9.0 +/-    0.41      11.6 +/-    0.41  0.080 / 0.100
G22     313.6          53.1                8.0 +/-    1.38       9.8 +/-    1.38  0.080 / 0.090
G25     50.1           16.0                7.8 +/-    1.80      18.9 +/-    1.80  0.050 / 0.070
G26     148.3          26.0               11.0 +/-    2.15      21.1 +/-    2.15  0.050 / 0.080
G31     52.2           74.0               10.0 +/-    0.36      10.3 +/-    0.36  0.110 / 0.350
G32     65.6           31.9                7.4 +/-    1.10      12.6 +/-    1.10  0.100 / 0.380