set style data l;

set xlabel "date";
set ylabel "frequency (per million)";
set xrange [*:*]
set yrange [0:*];
unset grid;
;
set title "\"\@Sollten\" [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	1.19071858675992
1760	1.19071858675992
1765	2.87485820193402
1770	2.7665418120176
1775	3.59418304278632
1780	3.32592360501943
1785	8.42409808070179
1790	9.01919505187652
1795	8.89539593575886
1800	3.8089742544453
1805	3.76925359970984
1810	3.16829998251846
1815	2.59515242020223
1820	1.8208311338644
1825	1.52599984251527
1830	1.25977821455938
1835	1.57772007179375
1840	1.69651007948789
1845	2.21477101032699
1850	1.91892315256851
1855	1.85538427533468
1860	1.9155980891293
1865	1.82188889538511
1870	1.82839634373859
1875	1.66114741018456
1880	1.74099848578971
1885	1.96830667226682
1890	2.02502671520683
1895	1.98698849266285
1900	1.98464252362781
1905	1.9468141877582
1910	2.0992201274602
1915	1.41620317845533
1920	1.09694978904756
e