PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2017/12/17-22:42:30
G01     229.3          19.8               11.6 +/-    2.78      25.5 +/-    2.78  0.030 / 0.020
G03     295.6          65.1                8.2 +/-    0.82       8.9 +/-    0.82  0.020 / 0.030
G14     83.3           26.4                7.5 +/-    1.37      14.2 +/-    1.37  0.080 / 0.080
G16     154.1          39.3               12.7 +/-    0.85      18.7 +/-    0.85  0.070 / 0.080
G22     230.0          73.6                9.6 +/-    0.26      10.0 +/-    0.26  0.070 / 0.050
G23     304.0          34.0                6.6 +/-    1.76      10.7 +/-    1.76  0.050 / 0.080
G26     107.9          53.5                9.4 +/-    0.69      11.4 +/-    0.69  0.080 / 0.210
G31     43.1           37.4                6.9 +/-    1.38      10.5 +/-    1.38  0.080 / 0.170