condition mean min max Control 5.316988888888889 4.710026666666667 6.51957 Nitrogen deficiency 6.685231111111111 5.60491 8.49533 Phosphate deficiency 5.988975555555555 5.06577 7.22262 Potassium deficiency 6.731365555555556 4.9192 9.91225 Heat 5.397465 4.54662 6.24831