#        mass          pdf          cdf
         1.82            0            0
         1.86            0            0
          1.9            0            0
         1.94            0            0
         1.98            0            0
         2.02            0            0
         2.06            0            0
          2.1            0            0
         2.14            0            0
         2.18            0            0
         2.22            0            0
         2.26            0            0
          2.3           25            1
         2.34            0            1
         2.38            0            1
         2.42            0            1
         2.46            0            1
          2.5            0            1
         2.54            0            1
         2.58            0            1
         2.62            0            1
         2.66            0            1
          2.7            0            1
         2.74            0            1
         2.78            0            1