btw:
julia> A = [1.0, 2.0, 3.0, 4.0];
julia> B = [100.0, 200.0, 300.0, 400.0];
julia> using Measurements
julia> C = B .± A
4-element Vector{Measurement{Float64}}:
100.0 ± 1.0
200.0 ± 2.0
300.0 ± 3.0
400.0 ± 4.0
not only do they look nice, they behave correctly. (i.e. error propagates)