Reading the draws and working out what chance predicts.
Harmony Matrix
Every pair of numbers, and how often they meet
Not enough data yet for a pair matrix
Only 109 draws in this format era, so each pair of numbers is expected just 1.7 times. That is too few to tell a real pattern from noise; about 330 draws are needed.
Lottario: The Harmony Matrix — every pair of numbers — LotteryOracle