code: def pick_tile_size(self, seg_size, data_lengths, valid_chunks, valid_lengths):
          
  
          if len(valid_lengths) == 1:
              return data_lengths[0], valid_chunks[0], valid_lengths[0]
          else:
              # Pick the tile size that is closest to 1/3 of the science segment
              target_size = seg_size / 3
              pick, pick_diff = 0, abs(valid_lengths[0] - target_size)
              for i, size in enumerate(valid_lengths):
                  if abs(size - target_size) < pick_diff:
                      pick, pick_diff  = i, abs(size - target_size)
              return data_lengths[pick], valid_chunks[pick], valid_lengths[pick]
docs: Choose job tiles size based on science segment length