h1 = @execution_environment

.table-responsive
  table.table.table-striped.sortable
    thead
      tr
        - ['.exercise', '.users', '.score', '.maximum_score', '.stddev_score', '.percentage_correct', '.runs', '.worktime', '.stddev_worktime'].each do |title|
          th.header = t(title)
    tbody
      - @execution_environment.exercises.each do |exercise|
        - us = user_statistics[exercise.id]
        - if not us then us = {"users" => 0, "average_score" => 0.0, "maximum_score" => 0, "stddev_score" => 0.0, "percent_correct" => nil, "average_submission_count" => 0}
        - wts = working_time_statistics[exercise.id]
        - if wts then average_time = wts["average_time"] else 0
        - if wts then stddev_time = wts["stddev_time"] else 0
        tr
          td = link_to exercise.title, controller: "exercises", action: "statistics", id: exercise.id, 'data-turbolinks' => "false"
          td = us["users"]
          td = us["average_score"].to_f.round(4)
          td = us["maximum_score"].to_f.round(2)
          td = us["stddev_score"].to_f.round(4)
          td = (us["percent_correct"].to_f or 0).round(4)
          td = us["average_submission_count"].to_f.round(2)
          td = average_time
          td = stddev_time