正在分析Go中的csv文件，第一行第一列中的额外字节

package main

import (
    "encoding/csv"
    "fmt"
    "os"
)

func main() {
    file, err := os.Open("data.csv")
    if err != nil {
        fmt.Println("Error opening file:", err)
        return
    }
    defer file.Close()

    reader := csv.NewReader(file)
    reader.LazyQuotes = true
    reader.FieldsPerRecord = -1

    records, err := reader.ReadAll()
    if err != nil {
        fmt.Println("Error reading CSV file:", err)
        return
    }

    firstRow := records[0]
    firstColumn := firstRow[0]

    fmt.Println("Extra bytes in the first cell of the CSV file:", firstColumn)
}