code: def interval_to_quantile_level(
      interval_level: int, side: str
  ) -> float:
      """Convert a prediction interval level (upper or lower) into a quantile level."""
      if side == "upper":
          level = 50 + interval_level / 2
      elif side == "lower":
          level = 50 - interval_level / 2
      else:
          raise ValueError(side)
      return level / 100
  
imports: from typing import Tuple
  import numpy
label_desc: Use image node_id 2 for calling a global function with example usage: interval_to_quantile_level(interval_level, side) and returns: unknown