Number hit intervals is a statistical tool for analyzing 七星彩 lottery that identifies patterns in the intervals between each number's appearances in draws.

This method is based on counting the number of draws between repeated occurrences of a specific ball. The interval analysis helps identify numbers that are 'due' to appear in upcoming draws.

Based on the last 20 draws for 七星彩 lottery: Field # 1: ball 6 has been absent the longest (depth 17 draws), ball 7 appeared most recently (depth 0). Field # 2: ball 8 has been absent the longest (depth 17 draws), ball 5 appeared most recently (depth 0). Field # 3: ball 8 has been absent the longest (depth 19 draws), ball 1 appeared most recently (depth 0). Field # 4: ball 5 has been absent the longest (depth 14 draws), ball 1 appeared most recently (depth 0). Field # 5: ball 8 has been absent the longest (depth 13 draws), ball 6 appeared most recently (depth 0). Field # 6: ball 8 has been absent the longest (depth 7 draws), ball 2 appeared most recently (depth 0). Field # 7: ball 7 has been absent the longest (depth 19 draws), ball 5 appeared most recently (depth 0). Full interval table is shown below. Draws between hits →Karnauh method →