code: def at_radii(self, radii: np.ndarray) -> np.ndarray:
      df = pd.read_csv(self.data_file_path, header=None, delimiter="\t")
      return np.array([self.at_radius(df, radius) for radius in radii])
  
imports: from easydict import EasyDict
  from typing import *
  import math
  import matplotlib
  import matplotlib.pyplot
  import numpy
  import os
  import pandas
  import seaborn
label_desc: Use image node_id 2 for calling the ApproximateAccuracy_API obj's underlying member method code with example usage: obj.at_radii(radii) and returns: np