r-values in ECDSA Signatures
Shows the distribution of low and high r-values in ECDSA signatures per day.0 - moon
moving average
The Bitcoin Core v0.17.0 release in October 2018 included an improvement to the wallet code that would only produce low-r signatures. This has been picked up by other wallets such as the Electrum Bitcoin Wallet in late 2019.
Related Charts

r and S-values in Bitcoin ECDSA Signatures
Shows the distribution of low and high r and S-values in ECDSA signatures per day.
DER encoded ECDSA Signatures
Shows the distribution of DER-encoded ECDSA signatures per day.
Length of ECDSA Signatures
Shows distribution of ECDSA signature length per day.