What does this variable R mean

What does this variable R mean if it is the same in transaction signatures, and can I find S Z from the transaction I want an explanation or someone helps me to find the variables

type address: 3AQYerxq4C2qmjthFpKCHYuoM8mzMRE9Q7
ADDRESS-R-SCAN:
Data for pubkey: 3AQYerxq4C2qmjthFpKCHYuoM8mzMRE9Q7 has 50 Txs
Fetching Txs from offset 0
Fetching Txs from offset 50
Resued R-Value:
87c735eb8413a42fc856eec1ff432ef43c25
Resued R-Value:
87c735eb8413a42fc856eec1ff432ef43c25
Resued R-Value:
87c735eb8413a42fc856eec1ff432ef43c25
Resued R-Value:
87c735eb8413a42fc856eec1ff432ef43c25
Resued R-Value:
87c735eb8413a42fc856eec1ff432ef43c25
Resued R-Value:
87c735eb8413a42fc856eec1ff432ef43c25
Resued R-Value:
87c735eb8413a42fc856eec1ff432ef43c25
Resued R-Value:
87c735eb8413a42fc856eec1ff432ef43c25
Resued R-Value:
87c735eb8413a42fc856eec1ff432ef43c25
Resued R-Value:
87c735eb8413a42fc856eec1ff432ef43c25
Resued R-Value:
87c735eb8413a42fc856eec1ff432ef43c25
Resued R-Value:
87c735eb8413a42fc856eec1ff432ef43c25
Resued R-Value:
87c735eb8413a42fc856eec1ff432ef43c25
Resued R-Value:

Resued R-Value:

Address 3AQYerxq4C2qmjthFpKCHYuoM8mzMRE9Q7 has 15 reused R values!