The 4th digit is divided into 5 parts

Divide the 4th digit of the lottery numbers (4-31) into 5 parts:

No.1 range: 4 - 9

No.2 range: 10 - 15

No.3 range: 16 - 21

No.4 range: 22 - 26

No.5 range: 27 - 31