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| Parameter | Equation | Similar Parameter | Reference |
|---|---|---|---|
| FV/FM | (FM − F0)/FM | van Kooten and Snel (1990) | |
| NPQd | (FM − FM′)/FM′ | NPQ | Bilger and Bjorkman (1990) |
| NPQs | (FMt0 − FM)/FM | qZ | Nilkens et al. (2010) |
| NPQt | NPQd + NPQs |
