Index Tier

-Tier One

-Early Stage: 1-7

-Middle Stage: 8-15

-Peak Stage: 16-20

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-Tier Two

-Early Stage: 21-27

-Middle Stage: 28- 35

-Peak Stage: 36-40

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-Tier Three

-Early Stage: 41-47

-Middle Stage: 48-55

-Peak Stage: 56-60

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-Tier Four

-Early Stage: 61-67

-Middle Stage: 68-75

-Peak Stage: 76-80

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-Tier Five

-Early Stage: 81-86

-Middle Stage: 87-94

-Peak Stage: 95-99

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-Tier Six

- Completion Stage: 100

Important Note: They can't determine the exact level of a Pokemon like the MC, but some machines and devices can roughly read around them.