energy vs threats
threats
  45 ++----------+-----------+----------+-----------+-----------+----------++
     +           +           + A        +           "data/Et.sorted"   A    +
  40 ++A             A                                                     ++
     |A                                                                     |
  35 ++          A  A                                                      ++
     |A    A A A                           A              A                 |
  30 +A   AA A       A        A    A                                       ++
     |A A    A  A               A               A                           |
  25 +AA  AAA    A    A  A    A                                            ++
     AAAA AA  A  A  A  A    A                                        A      |
  20 AAAA AA AAA A AA  A         A                                         ++
     AAAAAAAAAAA     A  A AA     A                     A                    |
  15 AAAAAAAA AAAAA   A A                                                  ++
     AAAAAAAAAAAAAA                 A           A           A               |
  10 AAAAAAAAAAAAA AAA AAA  A                                              ++
     AAAAAAAAAA  AAAA AA  A      AA    A                                    |
   5 AAAAAAAAAAAAAAAAAA                                                    ++
     AAAAAAAAAAAAA AAA A     A          +           +           +           +
   0 AAAAAAAAA---+-A---------+----------+-----------+-----------+----------++
     0         50000       100000     150000      200000      250000     300000
                                     energy