**`quality`**

- `[int64]` the quality of the wine based on evaluation by a minimum of three sensory assessors (using blind tastes), which graded the wine in a scale that ranges from 0 (very bad) to 10 (excellent)

**`color`**

- `[object]` the (human perceivable) color of the wine, red or white

**`fixed acidity`**

- `[float64]` grams of tartaric acid per cubic decimeter

**`volatile acidity`**

- `[float64]` grams of acetic acid per cubic decimeter

**`citric acid`**

- `[float64]` grams of citric acid per cubic decimeter

**`residual sugar`**

- `[float64]` grams of residual sugar per cubic decimeter

**`chlorides`**

- `[float64]` grams of sodium chloride cubic decimeter

**`free sulfur dioxide`**

- `[float64]` milligrams of free sulfur dioxide per cubic decimeter

**`total sulfur dioxide`**

- `[float64]` milligrams of total sulfur dioxide per cubic decimeter

**`density`**

- `[float64]` the total density of the wine in grams per cubic centimeter

**`pH`**

- `[float64]` the acidity of the wine measured using [pH](https://en.m.wikipedia.org/wiki/PH)

**`sulphates`**

- `[float64]` grams of potassium sulphate cubic decimeter

**`alcohol`**

- `[float64]` percent [alcohol by volume](https://en.m.wikipedia.org/wiki/Alcohol_by_volume)