PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2018/01/26-19:57:50
G01     229.8          20.3               12.5 +/-    2.66      27.2 +/-    2.66  0.030 / 0.030
G03     294.5          66.4                9.9 +/-    0.69      10.7 +/-    0.69  0.030 / 0.030
G14     82.3           27.7                9.8 +/-    1.52      18.0 +/-    1.52  0.100 / 0.170
G16     152.3          39.8               13.3 +/-    0.42      19.3 +/-    0.42  0.070 / 0.170
G22     227.7          73.8               11.0 +/-    0.38      11.4 +/-    0.38  0.230 / 0.330
G23     304.2          34.6               10.0 +/-    1.31      15.9 +/-    1.31  0.230 / 0.300
G26     106.2          53.1                9.8 +/-    0.57      11.9 +/-    0.57  0.070 / 0.080
G31     43.5           36.4                7.9 +/-    1.39      12.2 +/-    1.39  0.060 / 0.080