what does output parameters of lwe estimator stands for? I want to use lwe estimator to find classical and quantum security of my proposed key exchange protocol. On this website, I want to understand the output of sage code on  lwe estimator given bellow.

sage: load(&quot;estimator.py&quot;)
sage: n, alpha, q = Param.Regev(128)
sage: costs = estimate_lwe(n, alpha, q)

The output is

usvp: rop:  ≈2^57.2,  red:  ≈2^57.2,  δ_0: 1.009214,  β:  101,  d:  349,  m:      220
dec: rop:  ≈2^61.5,  m:      229,  red:  ≈2^61.5,  δ_0: 1.009595,  β:   93,  d:  357,  babai:  ≈2^46.8,  babai_op:  ≈2^61.9,  repeat:      293,  ε: 0.015625
dual: rop:  ≈2^81.4,  m:      376,  red:  ≈2^81.4,  δ_0: 1.008810,  β:  111,  d:  376,  |v|:  736.521,  repeat:  ≈2^19.0,  ε: 0.003906

What is rop, red, δ_0, β, d, m stands for in the output. I search many official documentation of lwe estimator like this (they give brief description of other parameters like bop in section 7) and this. But they provide information about input parameters and algorithms used and not about the output parameters. Any help is appreciated.
δ_0: the root Hermite factor required
β: the BKZ block size
d: the dimension of the lattice being reduced
m: the number of LWE samples used