PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2018/03/23-16:12:50
G03     286.1          69.7               12.5 +/-    0.59      13.2 +/-    0.59  0.090 / 0.160
G14     83.1           28.1               11.2 +/-    1.33      20.4 +/-    1.33  0.080 / 0.140
G16     148.4          42.8               14.0 +/-    1.05      19.5 +/-    1.05  0.050 / 0.120
G22     212.5          71.7               12.2 +/-    0.33      12.8 +/-    0.33  0.050 / 0.110
G23     307.0          38.0               10.2 +/-    1.91      15.3 +/-    1.91  0.030 / 0.030
G26     100.1          53.4               13.9 +/-    0.78      16.9 +/-    0.78  0.030 / 0.040
G31     44.6           33.2                9.0 +/-    0.83      14.9 +/-    0.83  0.040 / 0.030