before     during
      1.6        1.6
        2          2
      1.2        1.2
      1.6        1.6
      1.6        1.5
      1.7        1.6
      1.6        1.5
      1.6        1.7
      1.6        1.4
      1.7        1.5
        1        1.3
      1.5        1.8
      1.5        1.8
      1.4        1.8
      1.5          2