What does "Chip CSI Performance Ranking" mean? #258

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Hi,

The ESP-CSI Solution Guide states:

ESP32-C5 > ESP32-C6 > ESP32-C3 ≈ ESP32-S3 > ESP32

Source: Chip CSI Performance Ranking

Could you clarify what "Chip CSI Performance" means here? Is it about subcarrier count, sampling rate, dual-band support, accuracy, noise floor, or something else?

Thank you!