telhados  nclientes
      79.3       31
     200.1       55
     163.2       67
     200.1       50
     146.0       38
     177.7       71
      30.9       30
     291.9       56
     160.0       42
     339.4       73
     159.6       60
      86.3       44
     237.5       50
     107.2       39
     155.0       55
     291.4       70
     100.2       40
     135.8       50
     223.3       62
     195.0       59
      73.4       53
      47.7       38
     140.7       43
      93.5       26
     259.0       75
     331.2       71