PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2017/12/29-21:13:10
G01     244.9          31.9               10.4 +/-    1.04      17.5 +/-    1.04  0.100 / 0.150
G03     314.1          49.8                8.3 +/-    0.92      10.5 +/-    0.92  0.130 / 0.130
G14     66.2           37.4                7.5 +/-    0.92      11.3 +/-    0.92  0.050 / 0.030
G16     162.7          22.0               12.3 +/-    1.61      25.7 +/-    1.61  0.040 / 0.030
G22     295.2          70.6                9.5 +/-    0.67      10.0 +/-    0.67  0.050 / 0.050
G23     290.8          22.6               10.5 +/-    2.02      21.8 +/-    2.02  0.040 / 0.040
G26     132.2          42.3               10.4 +/-    0.67      14.6 +/-    0.67  0.130 / 0.300
G31     39.9           53.9                7.5 +/-    0.63       9.0 +/-    0.63  0.080 / 0.230
G32     82.0           19.7                8.2 +/-    2.04      18.1 +/-    2.04  0.050 / 0.080