13.010237 = sum of:
  3.0102365 = max of:
    3.0102365 = weight(allfields:concurr in 17098) [SchemaSimilarity], result of:
      3.0102365 = score(freq=3.0), computed as boost * idf * tf from:
        6.256005 = idf, computed as log(1 + (N - n + 0.5) / (n + 0.5)) from:
          628 = n, number of documents containing term
          327531 = N, total number of documents with field
        0.48117554 = tf, computed as freq / (freq + k1 * (1 - b + b * dl / avgdl)) from:
          3.0 = freq, occurrences of term within document
          1.2 = k1, term saturation parameter
          0.75 = b, length normalization parameter
          264.0 = dl, length of field (approximate)
          80.96143 = avgdl, average length of field
  10.0 = max of:
    10.0 = allfields_unstemmed:program*^10.0
    1.0 = allfields:program*