$data <<EOF
03/2004	3.02	3.22	3.00	3.10	2.65%
04/2004	3.10	3.39	2.78	2.78	-10.32%
05/2004	2.78	2.79	2.44	2.79	0.36%
06/2004	2.79	2.82	2.54	2.76	-1.08%
07/2004	2.76	3.08	2.70	2.99	8.33%
08/2004	2.99	3.03	2.77	2.91	-2.68%
09/2004	2.91	3.27	2.79	3.27	12.37%
10/2004	3.27	3.37	2.87	2.87	-12.23%
11/2004	2.87	3.26	2.80	3.26	13.59%
12/2004	3.26	3.31	3.03	3.16	-3.07%
01/2005	3.16	3.49	3.05	3.49	10.44%
02/2005	3.49	3.93	3.41	3.93	12.61%
03/2005	3.93	4.08	3.54	3.64	-7.38%
04/2005	3.64	3.72	3.22	3.22	-11.54%
05/2005	3.22	3.41	3.03	3.35	4.04%
06/2005	3.35	3.74	3.35	3.61	7.76%
07/2005	3.61	3.90	3.57	3.84	6.37%
08/2005	3.84	4.30	3.80	4.26	10.94%
09/2005	4.26	4.71	4.23	4.60	7.98%
10/2005	4.60	4.60	4.23	4.42	-3.91%
11/2005	4.42	5.03	4.31	4.90	10.86%
12/2005	4.90	5.48	4.90	5.42	10.61%
01/2006	5.42	6.17	5.34	6.15	13.47%
02/2006	6.15	6.38	5.68	6.14	0.16%
03/2006	6.14	6.23	5.67	6.18	0.65%
04/2006	6.18	7.25	6.18	6.95	12.46%
05/2006	6.95	7.61	5.93	6.02	-13.38%
06/2006	6.02	6.17	5.12	6.17	2.49%
07/2006	6.17	6.43	5.72	6.14	0.49%
08/2006	6.14	6.90	6.14	6.90	12.38%
09/2006	6.90	7.19	6.31	6.90	0.00%
10/2006	6.90	7.90	6.56	7.64	10.72%
11/2006	7.64	8.04	6.90	6.98	-8.64%
12/2006	6.98	8.12	6.98	7.86	12.61%
01/2007	7.86	7.86	6.76	7.00	-10.94%
02/2007	7.00	7.38	6.91	6.94	0.86%
03/2007	6.94	7.74	6.38	7.49	7.93%
04/2007	7.49	8.02	7.45	8.02	7.08%
05/2007	8.02	8.51	7.84	8.05	0.37%
06/2007	8.05	9.31	8.05	9.11	13.17%
07/2007	9.11	11.56	9.11	10.70	17.45%
08/2007	10.70	10.70	9.09	10.64	0.56%
09/2007	10.64	11.81	10.05	10.87	2.16%
10/2007	10.87	12.56	10.87	11.61	6.81%
11/2007	11.61	12.16	8.99	10.57	-8.96%
12/2007	10.57	11.21	9.56	9.94	-5.96%
01/2008	9.94	9.94	7.89	8.86	-10.87%
02/2008	8.86	11.24	8.86	10.90	23.02%
03/2008	10.90	10.90	8.16	8.44	-22.57%
04/2008	8.44	10.57	8.44	10.42	23.46%
05/2008	10.42	10.42	8.69	8.74	-16.12%
06/2008	8.74	8.79	7.91	8.35	-4.46%
07/2008	8.35	8.35	6.46	7.31	-12.46%
08/2008	7.31	7.36	6.60	7.36	0.68%
09/2008	7.36	7.60	4.79	4.79	-34.92%
10/2008	4.79	4.80	3.45	4.53	-5.43%
11/2008	4.53	5.54	3.71	5.54	22.30%
12/2008	5.54	5.54	4.24	4.27	-22.92%
01/2009	4.27	5.44	4.22	4.90	14.75%
02/2009	4.90	5.54	4.57	5.03	2.65%
03/2009	5.03	6.05	4.80	5.32	5.77%
04/2009	5.32	6.71	5.32	6.40	20.30%
05/2009	6.40	7.65	6.21	7.15	11.72%
06/2009	7.15	7.99	6.53	7.01	-1.96%
07/2009	7.01	9.07	6.63	9.07	29.39%
08/2009	9.07	9.46	8.19	8.73	-3.75%
09/2009	8.73	8.73	7.84	8.35	-4.35%
10/2009	8.35	9.53	7.77	9.21	10.30%
11/2009	9.21	10.55	8.69	10.08	9.45%
12/2009	10.08	10.76	9.81	10.65	5.65%
01/2010	10.65	11.89	10.36	10.36	-2.72%
02/2010	10.36	10.67	9.35	9.80	-5.41%
03/2010	9.80	11.60	9.80	11.60	18.37%
04/2010	11.60	12.39	11.11	11.87	2.33%
05/2010	11.87	11.87	9.65	10.42	-12.22%
06/2010	10.42	11.15	9.75	9.75	-6.43%
07/2010	9.75	12.14	9.24	11.79	20.92%
08/2010	11.79	12.82	11.79	12.40	5.17%
09/2010	12.40	14.50	12.40	14.15	14.11%
10/2010	14.15	15.17	13.98	15.07	6.50%
11/2010	15.07	17.66	15.07	16.01	6.24%
12/2010	16.01	19.27	16.01	19.17	19.74%
01/2011	19.17	19.44	16.12	16.27	-15.13%
02/2011	16.27	17.94	15.70	16.93	4.06%
03/2011	16.93	17.25	14.63	15.93	-5.91%
04/2011	15.93	17.21	15.30	15.49	-2.76%
05/2011	15.49	15.49	13.13	15.33	-1.03%
06/2011	15.33	15.33	13.72	15.33	0.00%
07/2011	15.33	16.50	15.33	15.94	3.98%
08/2011	15.94	16.44	13.01	15.17	-4.83%
09/2011	15.17	15.43	10.73	10.98	-27.62%
10/2011	10.98	14.21	10.42	14.14	28.78%
11/2011	14.14	14.49	11.69	12.65	-10.54%
12/2011	12.65	14.70	12.65	14.51	14.70%
01/2012	14.51	16.63	14.51	15.68	8.06%
02/2012	15.68	16.73	15.58	16.18	3.19%
03/2012	16.18	16.18	13.58	14.10	-12.86%
04/2012	14.10	14.95	13.07	14.78	4.82%
05/2012	14.78	14.78	12.32	12.84	-13.13%
06/2012	12.84	13.92	12.22	13.35	3.97%
07/2012	13.35	14.45	13.13	14.01	4.94%
08/2012	14.01	14.50	13.29	13.77	-1.71%
09/2012	13.77	16.44	13.77	16.24	17.94%
10/2012	16.24	16.67	15.44	15.69	-3.39%
11/2012	15.69	16.29	15.20	15.92	1.47%
12/2012	15.92	17.18	15.88	16.56	4.02%
01/2013	16.56	17.01	13.55	13.55	-18.18%
02/2013	13.55	13.55	12.33	12.97	-4.28%
03/2013	12.97	12.99	11.86	11.86	-8.56%
04/2013	11.86	12.05	10.36	10.90	-8.09%
05/2013	10.90	11.66	10.83	11.15	2.29%
06/2013	11.15	11.51	9.49	9.67	-13.27%
07/2013	9.67	10.50	9.43	10.06	4.03%
08/2013	10.06	11.47	9.85	9.96	0.99%
09/2013	9.96	10.74	9.74	9.74	-2.21%
10/2013	9.74	10.72	9.74	10.36	6.37%
11/2013	10.36	10.58	9.44	9.78	-5.60%
12/2013	9.78	9.93	8.96	9.93	1.53%
01/2014	9.93	10.71	9.26	10.62	6.95%
02/2014	10.62	11.70	10.01	11.15	4.99%
03/2014	11.15	11.28	9.44	10.30	-7.62%
04/2014	10.30	10.73	9.60	9.77	-5.15%
05/2014	9.77	10.08	9.48	9.95	1.84%
06/2014	9.95	9.95	9.39	9.52	-4.32%
07/2014	9.52	10.97	9.52	10.25	7.67%
08/2014	10.25	10.40	10.00	10.00	-2.44%
09/2014	10.00	10.21	9.27	9.45	-5.50%
10/2014	9.45	9.45	8.20	8.84	-6.46%
11/2014	8.84	9.79	8.76	9.29	5.09%
12/2014	9.29	9.64	8.64	9.61	3.44%
01/2015	9.61	9.70	8.60	8.68	-9.68%
02/2015	8.68	10.55	8.68	10.55	21.54%
03/2015	10.55	10.69	9.48	10.08	-4.45%
04/2015	10.08	11.21	9.97	10.93	8.43%
05/2015	10.93	11.24	10.44	10.72	-1.92%
06/2015	10.72	10.72	9.73	9.73	-9.24%
07/2015	9.73	9.73	8.03	8.03	-17.47%
08/2015	8.03	8.40	7.31	8.23	2.49%
09/2015	8.23	8.73	6.42	6.71	-18.47%
10/2015	6.71	8.17	6.71	7.45	11.03%
11/2015	7.45	7.49	6.65	7.01	-5.91%
12/2015	7.01	7.41	5.64	6.36	-9.27%
01/2016	6.36	6.36	4.45	5.10	-19.81%
02/2016	5.10	6.60	4.74	6.05	18.63%
03/2016	6.05	7.60	5.88	5.88	-2.81%
04/2016	5.88	6.50	5.41	6.25	6.29%
05/2016	6.25	6.25	5.12	5.71	-8.64%
06/2016	5.71	5.73	4.97	5.30	-7.18%
07/2016	5.30	6.14	5.30	6.02	13.58%
08/2016	6.02	6.53	5.85	5.87	-2.49%
09/2016	5.87	6.25	5.64	5.91	0.68%
10/2016	5.91	6.25	5.72	5.85	-1.02%
11/2016	5.85	8.55	5.85	8.12	38.80%
12/2016	8.12	9.20	7.83	7.86	-3.20%
01/2017	7.86	10.18	7.86	9.47	20.48%
02/2017	9.47	10.63	9.40	9.40	0.74%
03/2017	9.40	10.10	8.55	9.75	3.72%
04/2017	9.75	10.27	9.58	9.90	1.54%
05/2017	9.90	9.90	8.96	9.15	-7.58%
06/2017	9.15	9.43	8.60	9.13	0.22%
07/2017	9.13	10.78	9.13	10.75	17.74%
08/2017	10.75	11.49	10.07	11.49	6.88%
09/2017	11.49	11.60	10.37	10.90	-5.13%
10/2017	10.90	11.79	10.87	10.95	0.46%
11/2017	10.95	11.24	10.40	10.40	-5.02%
12/2017	10.40	11.25	10.02	11.13	7.02%
01/2018	11.13	11.73	10.69	10.80	-2.96%
02/2018	10.80	10.80	9.86	10.23	-5.28%
03/2018	10.23	11.08	9.45	10.30	0.68%
04/2018	10.30	11.15	10.30	10.77	4.56%
05/2018	10.77	12.41	10.77	11.84	9.94%
06/2018	11.84	13.14	11.03	11.03	-6.84%
07/2018	11.03	11.04	10.40	10.97	0.54%
08/2018	10.97	11.23	8.87	9.20	-16.13%
09/2018	9.20	9.88	8.20	9.55	3.80%
10/2018	9.55	9.88	8.02	8.63	-9.63%
11/2018	8.63	9.67	8.63	9.43	9.27%
12/2018	9.43	9.58	8.28	8.57	-9.12%
01/2019	8.57	9.74	8.30	9.74	13.65%
02/2019	9.74	11.23	9.58	11.19	14.89%
03/2019	11.19	11.27	10.68	11.27	0.71%
04/2019	11.27	12.01	10.69	10.73	-4.79%
05/2019	10.73	10.73	8.82	8.89	-17.15%
06/2019	8.89	10.41	8.73	10.16	14.29%
07/2019	10.16	10.69	9.40	10.04	-1.18%
08/2019	10.04	10.27	8.72	9.37	-6.67%
09/2019	9.37	10.66	9.27	10.07	7.47%
10/2019	10.07	10.54	9.23	10.21	1.39%
11/2019	10.21	10.95	10.07	10.36	1.47%
12/2019	10.36	11.23	9.93	10.95	5.69%
01/2020	10.95	11.73	9.96	9.99	-8.77%
02/2020	9.99	10.48	8.78	8.78	-12.11%
03/2020	8.78	9.17	6.41	8.79	0.11%
04/2020	8.79	9.68	8.31	9.68	10.13%
05/2020	9.68	10.02	8.71	10.02	3.51%
06/2020	10.02	10.46	9.37	10.14	1.20%
07/2020	10.14	11.78	10.14	11.37	12.13%
08/2020	11.37	12.56	11.37	12.09	6.33%
09/2020	12.09	12.52	11.07	11.07	-8.44%
10/2020	11.07	11.62	10.72	11.16	0.81%
11/2020	11.16	14.34	11.16	14.34	28.49%
12/2020	14.34	16.21	14.34	15.85	10.53%
01/2021	15.85	17.80	15.85	16.40	3.47%
02/2021	16.40	21.60	16.00	21.20	29.27%
03/2021	21.20	21.80	19.00	19.80	-6.60%
04/2021	19.80	22.56	19.65	21.83	10.25%
05/2021	21.83	22.33	17.41	18.02	-17.45%
06/2021	18.02	18.49	15.92	16.74	-7.10%
07/2021	16.74	18.34	15.57	18.04	7.77%
08/2021	18.04	18.50	16.32	17.15	-4.93%
09/2021	17.15	17.56	15.53	16.21	-5.48%
10/2021	16.21	17.89	15.46	16.96	4.63%
11/2021	16.96	17.58	16.00	16.01	-5.60%
12/2021	16.01	16.80	15.36	15.94	0.44%
01/2022	15.94	17.82	15.76	16.21	1.69%
02/2022	16.21	17.51	14.49	17.51	8.02%
03/2022	17.51	21.47	17.51	20.33	16.11%
04/2022	20.33	20.50	17.25	18.25	-10.23%
05/2022	18.25	18.45	15.80	17.90	-1.92%
06/2022	17.90	18.40	13.70	13.70	-23.46%
07/2022	13.70	14.10	11.80	14.10	2.92%
08/2022	14.10	14.35	13.00	13.00	-7.80%
09/2022	13.00	14.00	11.45	12.45	-4.23%
10/2022	12.45	14.20	12.15	14.10	13.25%
11/2022	14.10	16.25	13.50	15.75	11.70%
12/2022	15.75	18.20	15.75	17.50	11.11%
01/2023	17.50	21.00	17.45	19.60	12.00%
02/2023	19.60	19.65	17.55	17.65	-9.95%
03/2023	17.65	18.70	16.00	17.95	1.70%
04/2023	17.95	18.47	16.67	16.78	-6.52%
05/2023	16.78	16.78	15.55	15.76	-6.08%
06/2023	15.76	18.37	15.61	16.76	6.35%
07/2023	16.76	19.30	16.22	19.02	13.48%
08/2023	19.02	19.63	16.07	16.80	-11.67%
09/2023	16.80	17.59	16.01	16.38	-2.50%
10/2023	16.38	17.14	15.09	15.74	-3.91%
11/2023	15.74	16.35	14.68	16.33	3.75%
12/2023	16.33	19.60	16.33	19.57	19.84%
01/2024	19.57	19.96	18.21	19.93	1.84%
02/2024	19.93	21.07	19.21	20.61	3.41%
03/2024	20.61	24.22	20.29	24.22	17.52%
04/2024	24.22	26.75	23.81	26.54	9.58%
05/2024	26.54	28.20	25.23	26.41	0.49%
06/2024	26.41	26.63	24.02	24.68	-6.55%
07/2024	24.68	26.36	22.58	23.02	-6.73%
08/2024	23.02	23.02	20.91	21.61	-6.13%
09/2024	21.61	24.56	19.45	24.56	13.65%
10/2024	24.56	24.56	21.28	21.29	-13.31%
11/2024	21.29	21.80	19.59	20.20	-5.12%
12/2024	20.20	21.92	19.35	19.63	-2.82%
01/2025	19.63	21.11	19.38	21.10	7.49%
02/2025	21.10	22.80	20.38	21.34	1.14%
03/2025	21.34	23.39	20.65	20.65	-3.23%
04/2025	20.65	20.68	16.10	19.97	-3.29%
05/2025	19.97	22.21	19.67	21.16	5.96%
06/2025	21.16	23.07	19.69	21.46	1.42%
07/2025	21.46	23.59	21.13	22.39	4.33%
08/2025	22.39	25.32	21.71	25.30	13.00%
09/2025	25.30	32.40	24.40	32.40	28.06%
10/2025	32.40	33.16	30.42	32.12	0.86%
11/2025	32.12	32.12	28.99	30.75	-4.27%
12/2025	30.75	37.42	30.75	37.06	20.52%
EOF

set term pdf size 22,13
set term pdf font "sans,20"
set output "Antofagasta_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 "Antofagasta [GB0000456144] "