$data <<EOF
12/1997	26.93	26.93	25.99	26.53	-1.49%
01/1998	26.53	27.09	25.67	26.80	1.01%
02/1998	26.80	28.67	26.80	28.08	4.80%
03/1998	28.08	38.59	28.08	38.13	35.78%
04/1998	38.13	38.43	34.30	36.98	-3.02%
05/1998	36.98	41.61	36.31	41.61	12.54%
06/1998	41.61	45.02	38.43	40.06	-3.73%
07/1998	40.06	43.95	39.39	39.39	-1.67%
08/1998	39.39	39.39	32.69	32.69	-17.01%
09/1998	32.69	33.50	28.27	31.35	-4.10%
10/1998	31.35	35.77	29.74	34.70	10.69%
11/1998	34.70	36.71	34.70	35.37	1.93%
12/1998	35.37	35.37	30.95	33.09	-6.44%
01/1999	33.09	36.79	31.13	31.45	-4.98%
02/1999	31.45	32.86	30.19	31.63	0.60%
03/1999	31.63	32.39	28.93	31.13	-1.59%
04/1999	31.13	35.22	30.82	35.22	13.13%
05/1999	35.22	35.66	32.39	32.39	-8.04%
06/1999	32.39	34.78	31.76	34.78	7.38%
07/1999	34.78	40.09	34.59	34.84	0.18%
08/1999	34.84	38.30	34.59	37.73	8.30%
09/1999	37.73	39.87	35.97	36.67	-2.83%
10/1999	36.67	36.67	34.59	35.22	-3.95%
11/1999	35.22	35.22	33.21	34.59	-1.79%
12/1999	34.59	35.53	32.26	32.83	-5.09%
01/2000	32.83	37.67	32.83	33.96	3.45%
02/2000	33.96	37.42	33.84	35.53	4.63%
03/2000	35.53	40.25	35.53	38.99	9.73%
04/2000	38.99	39.94	36.16	37.73	-3.23%
05/2000	37.73	44.62	37.73	44.15	17.00%
06/2000	44.15	44.15	39.94	39.94	-9.54%
07/2000	39.94	43.93	39.94	43.08	7.88%
08/2000	43.08	45.47	41.00	41.00	-4.82%
09/2000	41.00	41.51	38.05	39.87	-2.76%
10/2000	39.87	40.88	38.30	39.15	-1.81%
11/2000	39.15	41.07	37.92	41.07	4.90%
12/2000	41.07	44.97	39.46	40.75	0.76%
01/2001	40.75	44.02	40.75	43.08	5.71%
02/2001	43.08	43.52	41.82	43.39	0.73%
03/2001	43.39	43.39	39.87	41.50	-4.36%
04/2001	41.50	41.50	38.36	38.43	-7.41%
05/2001	38.43	38.99	37.73	37.73	-1.80%
06/2001	37.73	38.68	35.69	37.04	-1.83%
07/2001	37.04	37.04	31.45	34.59	-6.62%
08/2001	34.59	35.85	32.33	34.78	0.55%
09/2001	34.78	35.72	27.23	27.83	-19.98%
10/2001	27.83	31.13	24.46	27.55	-1.02%
11/2001	27.55	29.31	26.94	27.92	1.37%
12/2001	27.92	28.71	26.29	26.70	-4.39%
01/2002	26.70	32.07	26.70	31.63	18.49%
02/2002	31.63	31.70	28.30	31.13	-1.59%
03/2002	31.13	32.64	30.91	31.48	1.13%
04/2002	31.48	34.28	31.48	34.28	8.87%
05/2002	34.28	34.59	31.38	32.20	-6.05%
06/2002	32.20	32.20	24.90	26.41	-17.97%
07/2002	26.41	27.23	21.38	24.06	-8.90%
08/2002	24.06	24.06	20.94	22.42	-6.82%
09/2002	22.42	23.33	16.35	18.21	-18.79%
10/2002	18.21	18.36	15.22	16.35	-10.19%
11/2002	16.35	16.85	14.53	16.32	0.19%
12/2002	16.32	17.64	13.58	13.84	-15.22%
01/2003	13.84	15.00	11.13	11.13	-19.54%
02/2003	11.13	11.95	8.55	9.25	-16.95%
03/2003	9.25	11.48	9.09	10.13	9.52%
04/2003	10.13	11.70	10.06	10.60	4.66%
05/2003	10.60	12.20	10.60	10.94	3.27%
06/2003	10.94	13.65	10.63	13.65	24.71%
07/2003	13.65	16.10	12.58	15.97	17.05%
08/2003	15.97	16.67	14.21	16.67	4.33%
09/2003	16.67	17.80	15.09	15.66	-6.04%
10/2003	15.66	18.93	15.60	18.80	20.08%
11/2003	18.80	19.81	17.55	18.80	0.00%
12/2003	18.80	21.38	18.11	19.21	2.18%
01/2004	19.21	21.57	19.12	20.13	4.75%
02/2004	20.13	20.51	18.43	18.43	-8.44%
03/2004	18.43	18.93	15.72	17.64	-4.27%
04/2004	17.64	19.24	16.10	18.36	4.10%
05/2004	18.36	19.06	15.72	16.23	-11.64%
06/2004	16.23	17.11	15.72	17.11	5.42%
07/2004	17.11	17.18	16.16	16.26	-4.96%
08/2004	16.26	16.26	13.90	15.28	-6.00%
09/2004	15.28	15.89	14.94	15.06	-1.44%
10/2004	15.06	15.63	14.16	14.16	-6.01%
11/2004	14.16	16.23	14.16	16.16	14.12%
12/2004	16.16	16.26	15.35	15.62	-3.31%
01/2005	15.62	16.41	15.44	16.41	5.07%
02/2005	16.41	17.14	16.41	16.86	2.72%
03/2005	16.86	17.02	15.03	15.41	-8.62%
04/2005	15.41	15.74	13.68	13.68	-11.22%
05/2005	13.68	16.10	13.58	15.79	15.40%
06/2005	15.79	15.93	14.80	15.12	-4.22%
07/2005	15.12	17.34	15.12	17.34	14.68%
08/2005	17.34	18.49	16.94	18.08	4.28%
09/2005	18.08	18.08	16.75	17.89	-1.05%
10/2005	17.89	17.99	16.01	16.67	-6.85%
11/2005	16.67	19.21	16.67	19.12	14.72%
12/2005	19.12	20.65	19.12	20.38	6.61%
01/2006	20.38	23.46	20.38	22.87	12.19%
02/2006	22.87	23.16	21.56	22.67	0.85%
03/2006	22.67	23.36	22.48	22.94	1.16%
04/2006	22.94	25.60	22.58	25.21	9.93%
05/2006	25.21	26.07	21.19	22.28	-11.62%
06/2006	22.28	22.68	19.86	22.58	1.32%
07/2006	22.58	22.96	20.05	20.30	-10.08%
08/2006	20.30	20.53	19.62	19.65	-3.19%
09/2006	19.65	20.53	19.33	20.50	4.29%
10/2006	20.50	22.45	20.46	22.45	9.54%
11/2006	22.45	23.11	20.28	20.60	-8.24%
12/2006	20.60	22.67	20.35	22.59	9.64%
01/2007	22.59	22.99	20.38	20.38	-9.80%
02/2007	20.38	22.14	20.25	20.25	0.61%
03/2007	20.25	21.60	19.56	21.55	6.39%
04/2007	21.55	22.31	21.55	21.91	1.67%
05/2007	21.91	23.67	21.91	23.02	5.08%
06/2007	23.02	24.64	22.29	22.47	-2.38%
07/2007	22.47	25.60	22.01	22.63	0.70%
08/2007	22.63	22.63	18.89	20.89	-7.67%
09/2007	20.89	21.11	19.28	19.34	-7.43%
10/2007	19.34	20.54	17.24	17.79	-8.04%
11/2007	17.79	17.79	12.49	13.60	-23.51%
12/2007	13.60	15.26	12.96	14.50	6.61%
01/2008	14.50	14.50	10.19	11.58	-20.16%
02/2008	11.58	12.48	9.90	10.21	-11.84%
03/2008	10.21	10.89	9.29	10.65	4.38%
04/2008	10.65	10.65	9.28	9.65	-9.45%
05/2008	9.65	11.38	9.65	10.14	5.15%
06/2008	10.14	10.19	8.19	8.19	-19.28%
07/2008	8.19	8.48	6.56	7.45	-9.06%
08/2008	7.45	9.06	7.26	8.77	17.82%
09/2008	8.77	9.89	6.70	7.09	-19.14%
10/2008	7.09	7.09	4.10	4.69	-33.96%
11/2008	4.69	4.72	2.53	2.85	-39.19%
12/2008	2.85	3.92	2.50	3.92	37.73%
01/2009	3.92	3.92	1.97	1.97	-49.85%
02/2009	1.97	2.77	1.80	2.08	5.44%
03/2009	2.08	2.50	1.80	2.33	12.14%
04/2009	2.33	3.53	2.33	3.43	47.31%
05/2009	3.43	4.01	3.09	3.15	-8.08%
06/2009	3.15	3.52	2.48	2.53	-19.77%
07/2009	2.53	3.21	2.28	3.21	27.14%
08/2009	3.21	4.06	3.21	3.87	20.35%
09/2009	3.87	4.67	3.55	4.52	16.75%
10/2009	4.52	4.55	2.99	3.14	-30.38%
11/2009	3.14	3.71	3.07	3.45	9.61%
12/2009	3.45	3.57	3.27	3.45	0.20%
01/2010	3.45	3.92	3.25	3.26	-5.73%
02/2010	3.26	3.56	3.05	3.23	0.71%
03/2010	3.23	3.46	3.19	3.36	3.99%
04/2010	3.36	3.97	3.36	3.97	18.21%
05/2010	3.97	4.72	3.59	4.47	12.58%
06/2010	4.47	5.53	4.47	4.70	5.14%
07/2010	4.70	5.03	4.53	4.75	0.96%
08/2010	4.75	4.96	3.68	3.83	-19.29%
09/2010	3.83	4.24	3.43	3.56	-7.10%
10/2010	3.56	3.59	2.95	3.33	-6.46%
11/2010	3.33	3.62	3.24	3.42	2.55%
12/2010	3.42	3.84	3.42	3.69	7.99%
01/2011	3.69	3.86	3.35	3.48	-5.64%
02/2011	3.48	3.90	3.45	3.58	2.82%
03/2011	3.58	3.58	3.01	3.33	-6.93%
04/2011	3.33	3.42	3.02	3.02	-9.46%
05/2011	3.02	3.07	2.86	2.89	-4.01%
06/2011	2.89	2.92	2.39	2.49	-14.03%
07/2011	2.49	2.92	1.97	1.97	-20.66%
08/2011	1.97	1.97	1.30	1.47	-25.38%
09/2011	1.47	1.62	1.23	1.57	6.72%
10/2011	1.57	1.69	1.45	1.46	-7.12%
11/2011	1.46	1.47	1.20	1.44	-1.16%
12/2011	1.44	1.47	1.21	1.25	-13.37%
01/2012	1.25	1.71	1.25	1.70	36.00%
02/2012	1.70	1.70	1.38	1.39	-18.12%
03/2012	1.39	1.53	1.29	1.50	7.90%
04/2012	1.50	1.50	1.28	1.34	-10.79%
05/2012	1.34	1.37	1.07	1.07	-20.37%
06/2012	1.07	1.14	1.02	1.10	3.09%
07/2012	1.10	1.12	0.97	1.04	-5.45%
08/2012	1.04	1.08	1.02	1.02	-2.12%
09/2012	1.02	1.22	1.00	1.18	15.72%
10/2012	1.18	1.22	1.11	1.15	-2.21%
11/2012	1.15	1.17	0.96	0.97	-15.80%
12/2012	0.97	1.30	0.97	1.22	25.77%
01/2013	1.22	1.73	1.22	1.60	30.90%
02/2013	1.60	2.24	1.60	2.16	35.25%
03/2013	2.16	2.16	1.79	1.81	-16.06%
04/2013	1.81	1.81	1.50	1.64	-9.76%
05/2013	1.64	1.92	1.60	1.91	16.75%
06/2013	1.91	2.16	1.87	1.94	1.62%
07/2013	1.94	2.00	1.80	1.85	-4.64%
08/2013	1.85	2.20	1.80	2.03	9.56%
09/2013	2.03	2.09	1.96	1.99	-2.02%
10/2013	1.99	2.08	1.83	1.99	0.10%
11/2013	1.99	2.85	1.94	2.73	37.58%
12/2013	2.73	2.74	2.54	2.59	-5.20%
01/2014	2.59	3.11	2.59	3.00	15.68%
02/2014	3.00	3.01	2.53	2.63	-12.15%
03/2014	2.63	2.63	2.17	2.23	-15.17%
04/2014	2.23	2.57	2.20	2.28	2.20%
05/2014	2.28	2.56	2.28	2.48	8.64%
06/2014	2.48	2.82	2.42	2.66	7.43%
07/2014	2.66	2.71	2.38	2.46	-7.66%
08/2014	2.46	2.50	2.31	2.39	-2.77%
09/2014	2.39	2.42	2.22	2.22	-7.07%
10/2014	2.22	2.25	1.84	2.02	-9.05%
11/2014	2.02	2.24	2.02	2.18	8.02%
12/2014	2.18	2.18	2.00	2.09	-4.26%
01/2015	2.09	2.09	1.90	2.09	0.05%
02/2015	2.09	2.27	1.96	2.27	8.61%
03/2015	2.27	2.50	2.23	2.47	8.94%
04/2015	2.47	2.62	2.37	2.37	-4.37%
05/2015	2.37	2.51	2.37	2.43	2.75%
06/2015	2.43	2.50	1.99	1.99	-18.11%
07/2015	1.99	2.40	1.94	2.33	16.83%
08/2015	2.33	2.38	2.07	2.15	-7.74%
09/2015	2.15	2.30	2.11	2.26	5.17%
10/2015	2.26	2.60	2.26	2.59	14.98%
11/2015	2.59	2.80	2.23	2.36	-9.06%
12/2015	2.36	2.38	2.18	2.26	-4.24%
01/2016	2.26	2.26	1.80	1.83	-18.95%
02/2016	1.83	1.86	1.66	1.86	1.31%
03/2016	1.86	2.03	1.83	1.99	7.44%
04/2016	1.99	2.00	1.87	2.00	0.25%
05/2016	2.00	2.60	1.92	2.60	30.13%
06/2016	2.60	2.65	2.22	2.46	-5.31%
07/2016	2.46	2.60	2.31	2.57	4.18%
08/2016	2.57	2.61	2.17	2.19	-14.66%
09/2016	2.19	2.29	2.07	2.16	-1.37%
10/2016	2.16	2.42	2.16	2.42	12.04%
11/2016	2.42	2.48	2.36	2.39	-1.24%
12/2016	2.39	2.53	2.23	2.53	6.03%
01/2017	2.53	2.68	2.44	2.44	-3.83%
02/2017	2.44	2.56	2.28	2.34	-3.94%
03/2017	2.34	2.37	2.25	2.34	0.21%
04/2017	2.34	2.54	2.31	2.54	8.91%
05/2017	2.54	2.65	2.42	2.42	-4.80%
06/2017	2.42	3.00	2.42	2.69	11.11%
07/2017	2.69	2.93	2.66	2.87	6.84%
08/2017	2.87	3.16	2.81	3.16	9.85%
09/2017	3.16	3.48	3.16	3.48	10.36%
10/2017	3.48	3.60	3.33	3.39	-2.67%
11/2017	3.39	3.47	2.86	2.92	-13.98%
12/2017	2.92	2.92	2.78	2.86	-1.99%
01/2018	2.86	2.98	2.78	2.87	0.45%
02/2018	2.87	3.07	2.58	3.07	6.89%
03/2018	3.07	3.10	2.85	3.06	0.20%
04/2018	3.06	3.24	2.94	3.08	0.65%
05/2018	3.08	3.27	3.00	3.00	-2.72%
06/2018	3.00	3.10	2.28	2.35	-21.53%
07/2018	2.35	2.47	2.28	2.47	4.76%
08/2018	2.47	2.62	2.35	2.44	-1.22%
09/2018	2.44	2.44	2.30	2.31	-5.25%
10/2018	2.31	2.48	1.93	2.04	-11.70%
11/2018	2.04	2.08	1.70	1.88	-7.75%
12/2018	1.88	1.89	1.48	1.59	-15.43%
01/2019	1.59	2.01	1.57	1.76	10.88%
02/2019	1.76	1.82	1.57	1.57	-10.95%
03/2019	1.57	1.63	1.49	1.54	-2.04%
04/2019	1.54	1.75	1.54	1.66	8.06%
05/2019	1.66	1.73	1.31	1.31	-21.12%
06/2019	1.31	1.44	1.27	1.40	7.09%
07/2019	1.40	1.44	0.93	0.98	-30.27%
08/2019	0.98	1.11	0.87	1.11	13.38%
09/2019	1.11	1.23	1.03	1.15	3.78%
10/2019	1.15	1.20	1.08	1.16	0.61%
11/2019	1.16	1.35	1.16	1.25	7.85%
12/2019	1.25	1.25	1.14	1.16	-7.36%
01/2020	1.16	1.17	0.90	0.90	-22.28%
02/2020	0.90	0.94	0.78	0.78	-12.89%
03/2020	0.78	0.80	0.53	0.56	-28.57%
04/2020	0.56	0.67	0.56	0.64	15.18%
05/2020	0.64	0.69	0.56	0.56	-12.09%
06/2020	0.56	0.70	0.56	0.57	0.53%
07/2020	0.57	0.72	0.57	0.71	25.44%
08/2020	0.71	0.79	0.60	0.60	-16.08%
09/2020	0.60	0.62	0.50	0.56	-5.50%
10/2020	0.56	0.58	0.48	0.48	-14.99%
11/2020	0.48	0.80	0.48	0.80	66.80%
12/2020	0.80	0.82	0.71	0.78	-1.87%
01/2021	0.79	1.31	0.79	1.20	52.09%
02/2021	1.20	1.52	1.11	1.20	0.17%
03/2021	1.20	1.26	1.08	1.16	-3.59%
04/2021	1.16	1.42	1.16	1.35	17.06%
05/2021	1.35	1.93	1.31	1.93	42.46%
06/2021	1.93	2.08	1.64	2.00	3.63%
07/2021	2.00	2.06	1.82	1.98	0.90%
08/2021	1.98	2.37	1.86	2.37	19.57%
09/2021	2.37	2.37	1.99	1.99	-15.69%
10/2021	1.99	2.25	1.88	2.25	12.59%
11/2021	2.25	2.82	2.25	2.48	10.24%
12/2021	2.48	2.79	2.48	2.65	7.07%
01/2022	2.65	3.06	2.47	2.80	5.66%
02/2022	2.80	3.03	2.27	2.50	-10.71%
03/2022	2.50	2.69	2.05	2.40	-4.00%
04/2022	2.40	2.42	2.10	2.12	-11.58%
05/2022	2.12	2.12	1.70	1.99	-6.08%
06/2022	1.99	2.02	1.40	1.40	-29.65%
07/2022	1.40	1.50	1.38	1.50	6.99%
08/2022	1.50	1.76	1.40	1.48	-1.67%
09/2022	1.48	1.48	1.11	1.14	-22.51%
10/2022	1.14	1.42	1.14	1.39	21.35%
11/2022	1.39	1.81	1.34	1.64	18.24%
12/2022	1.64	1.69	1.46	1.49	-8.90%
01/2023	1.49	1.89	1.49	1.89	26.17%
02/2023	1.89	2.01	1.68	1.71	-9.23%
03/2023	1.71	1.86	1.63	1.69	-1.11%
04/2023	1.69	1.86	1.58	1.86	9.63%
05/2023	1.86	1.86	1.65	1.66	-10.67%
06/2023	1.66	1.70	1.43	1.43	-13.76%
07/2023	1.43	1.52	1.41	1.46	1.96%
08/2023	1.46	1.46	1.26	1.30	-10.91%
09/2023	1.30	1.30	1.18	1.22	-6.39%
10/2023	1.22	1.22	1.11	1.12	-7.49%
11/2023	1.12	1.33	1.12	1.26	12.46%
12/2023	1.26	1.27	1.14	1.23	-2.77%
01/2024	1.23	1.23	1.08	1.10	-10.33%
02/2024	1.10	1.12	0.96	1.03	-6.72%
03/2024	1.03	1.07	0.98	1.03	0.58%
04/2024	1.03	1.06	0.86	0.95	-8.32%
05/2024	0.95	1.19	0.92	1.18	24.26%
06/2024	1.18	1.39	1.14	1.26	7.13%
07/2024	1.26	1.32	1.12	1.13	-10.78%
08/2024	1.13	1.13	0.97	1.05	-7.10%
09/2024	1.05	1.06	0.99	1.02	-2.29%
10/2024	1.02	1.02	0.94	0.96	-6.16%
11/2024	0.95	0.99	0.88	0.91	-4.28%
12/2024	0.91	0.94	0.90	0.91	0.22%
01/2025	0.92	1.22	0.92	1.21	31.88%
02/2025	1.21	1.22	1.06	1.06	-11.92%
03/2025	1.06	1.23	1.04	1.12	5.26%
04/2025	1.12	1.21	0.98	1.20	7.50%
05/2025	1.20	1.52	1.20	1.47	21.76%
06/2025	1.47	1.65	1.42	1.46	0.27%
07/2025	1.46	2.52	1.41	2.21	50.82%
08/2025	2.21	2.26	2.00	2.03	-8.16%
09/2025	2.03	2.23	1.84	2.22	9.38%
10/2025	2.22	2.36	1.94	1.94	-12.42%
11/2025	1.94	2.12	1.84	1.92	-1.03%
12/2025	1.92	2.07	1.83	2.02	5.21%
EOF

set term pdf size 22,13
set term pdf font "sans,20"
set output "Heidelberger_Druck_stock_price.pdf"
set grid
set key top left
set xdata time
set timefmt "%m/%Y"
set format x "%b %Y"
set xtics rotate by -90 
set xtics 365.25*24*60*60/1	# 1 tics per year

wd = 15.25*24*60*60	# 15.25 days box width
set style fill transparent solid 0.8
plot $data using 1:(($3+$4)/2):(wd):(($4-$3)/2) with boxxyerror lw 1 lc 3 title "Heidelberger Druckmaschinen [DE0007314007] "