dataexc = data.select do |element|
  element[:cz_name] || element[:tor_other_cz_name]
    false if [0] == “A” || [0] == “B” || [0] == “C”
    end
  end

cleaned_data = data.reject do |e|
  letters = ["A", "B", "C"]
  if e[:cz_name]
    letters.include?(e[:cz_name][0])
  end
end

cleaned_data = cleaned_data.reject do |e|
  letters = ["A", "B", "C"]
  if e[:tor_other_cz_name]
    letters.include?(e[:tor_other_cz_name][0])
  end
end

data.reject { |row|
  row.values_at(:cz_name, :tor_other_cz_name).any? { |val|
    val =~ /^[ABC]/
  }
}