set style data l;

set xlabel "date";
set ylabel "frequency (per million)";
set xrange [*:*]
set yrange [0:*];
unset grid;
;
set title "\"\@kont\" [slice=5 norm=date+class win=1]";
;
;
plot "-" title "Schulbuch";
1645	0
1650	0
1655	0
1660	0
1665	0
1670	0
1675	0
1680	0
1685	0
1690	0
1695	0
1700	0
1705	0
1710	0
1715	0
1720	0
1725	0
1730	0
1735	0
1740	0
1745	0
1750	0
1755	0
1760	0
1765	0
1770	0
1775	0
1780	0.128716379764292
1785	0.128716379764292
1790	0.128716379764292
1795	0
1800	0
1805	0
1810	0
1815	0.0744296326994385
1820	0.0744296326994385
1825	0.0744296326994385
1830	0
1835	0.231659529526136
1840	0.231659529526136
1845	0.231659529526136
1850	0
1855	0
1860	0.024507663105115
1865	0.101233529762525
1870	0.101233529762525
1875	0.0874679894319246
1880	0.0107421227745141
1885	0.0107421227745141
1890	0.00821285971545332
1895	0.0500606129441069
1900	0.0652387673664375
1905	0.0798560182873269
1910	0.10993939876671
1915	0.0947612443443798
1920	0.107896700562055
e