Recorded price history USD Listing start period All years 5 years 1 year
Recorded US-dollar price history Linear price scale. Horizontal axis: listing start date. Vertical axis: recorded price in US dollars. Filled dots have recorded sales; open dots have no recorded sales. The oxide step line shows calendar-month medians, with gaps for missing months. 0.00 500.00 1000.00 1500.00 2000.00 Apr 2018 May 2020 Jul 2022 Sep 2024 Oct 2026 2018-04-15: US$127.47; sold recorded 2018-08-06: US$125.99; sold recorded 2019-12-25: US$272.00; no sale recorded 2020-03-16: US$180.00; no sale recorded 2020-03-17: US$69.00; sold recorded 2020-07-25: US$290.00; no sale recorded 2020-07-25: US$289.90; no sale recorded 2020-07-25: US$285.00; no sale recorded 2020-07-25: US$288.00; no sale recorded 2020-10-05: US$195.00; no sale recorded 2020-10-10: US$29.99; no sale recorded 2020-11-13: US$284.90; no sale recorded 2020-11-13: US$289.90; no sale recorded 2020-11-13: US$287.90; no sale recorded 2020-11-13: US$289.80; no sale recorded 2020-11-18: US$130.00; no sale recorded 2020-11-20: US$188.55; no sale recorded 2021-01-06: US$283.00; no sale recorded 2021-03-16: US$289.80; no sale recorded 2021-03-18: US$289.79; no sale recorded 2021-03-18: US$289.77; no sale recorded 2021-03-19: US$287.00; no sale recorded 2021-04-15: US$289.80; no sale recorded 2021-04-15: US$287.90; no sale recorded 2021-04-15: US$289.90; no sale recorded 2021-04-15: US$284.90; no sale recorded 2021-04-16: US$280.99; no sale recorded 2021-04-18: US$83.79; sold recorded 2021-05-23: US$260.00; no sale recorded 2021-05-23: US$78.95; no sale recorded 2021-06-11: US$381.00; no sale recorded 2022-01-20: US$343.50; no sale recorded 2022-01-26: US$363.09; no sale recorded 2022-02-08: US$358.44; no sale recorded 2022-03-03: US$230.00; no sale recorded 2022-03-29: US$366.58; no sale recorded 2022-03-29: US$360.40; no sale recorded 2022-03-29: US$366.60; no sale recorded 2022-03-29: US$366.60; no sale recorded 2022-03-29: US$366.59; no sale recorded 2022-03-29: US$364.20; no sale recorded 2022-04-21: US$416.02; no sale recorded 2022-04-28: US$504.15; no sale recorded 2022-05-12: US$127.00; sold recorded 2022-06-24: US$387.32; no sale recorded 2022-06-28: US$366.56; no sale recorded 2022-06-28: US$366.59; no sale recorded 2022-06-28: US$366.73; no sale recorded 2022-06-28: US$364.20; no sale recorded 2022-06-28: US$366.58; no sale recorded 2022-06-28: US$366.60; no sale recorded 2022-06-28: US$366.60; no sale recorded 2022-07-14: US$365.33; no sale recorded 2022-07-14: US$365.53; no sale recorded 2022-07-15: US$366.33; no sale recorded 2022-07-19: US$369.00; no sale recorded 2022-09-13: US$360.00; no sale recorded 2022-09-15: US$377.85; no sale recorded 2022-09-15: US$377.87; no sale recorded 2022-09-23: US$364.20; no sale recorded 2022-09-23: US$360.40; no sale recorded 2022-09-29: US$78.95; no sale recorded 2022-10-06: US$369.00; no sale recorded 2022-10-11: US$365.93; no sale recorded 2022-10-11: US$365.73; no sale recorded 2022-10-11: US$365.63; no sale recorded 2022-10-11: US$365.33; no sale recorded 2022-10-24: US$227.50; no sale recorded 2022-11-15: US$377.88; no sale recorded 2022-12-08: US$373.46; no sale recorded 2023-01-05: US$365.83; no sale recorded 2023-01-05: US$365.63; no sale recorded 2023-01-05: US$365.93; no sale recorded 2023-01-14: US$263.12; no sale recorded 2023-01-16: US$143.06; no sale recorded 2023-02-09: US$377.88; no sale recorded 2023-02-15: US$475.00; no sale recorded 2023-02-27: US$992.31; no sale recorded 2023-03-06: US$363.99; no sale recorded 2023-03-16: US$229.00; no sale recorded 2023-03-16: US$490.66; sold recorded 2023-04-03: US$365.83; no sale recorded 2023-04-03: US$366.33; no sale recorded 2023-04-08: US$377.85; no sale recorded 2023-04-08: US$377.88; no sale recorded 2023-04-15: US$375.26; no sale recorded 2023-04-19: US$376.00; sold recorded 2023-04-21: US$99.00; sold recorded 2023-05-08: US$103.14; no sale recorded 2023-05-16: US$364.20; no sale recorded 2023-05-18: US$145.36; no sale recorded 2023-05-29: US$143.06; no sale recorded 2023-06-09: US$159.20; no sale recorded 2023-06-13: US$390.58; no sale recorded 2023-06-19: US$149.96; sold recorded 2023-07-04: US$366.30; no sale recorded 2023-07-10: US$364.20; no sale recorded 2023-07-10: US$366.58; no sale recorded 2023-07-10: US$366.56; no sale recorded 2023-07-10: US$366.60; no sale recorded 2023-07-10: US$360.40; no sale recorded 2023-07-14: US$152.72; no sale recorded 2023-07-20: US$72.99; no sale recorded 2023-07-24: US$357.20; no sale recorded 2023-08-30: US$365.93; no sale recorded 2023-08-30: US$365.33; no sale recorded 2023-08-30: US$365.73; no sale recorded 2023-08-30: US$366.33; no sale recorded 2023-09-08: US$366.73; no sale recorded 2023-09-08: US$360.40; no sale recorded 2023-09-08: US$366.58; no sale recorded 2023-09-08: US$366.60; no sale recorded 2023-09-08: US$366.59; no sale recorded 2023-09-08: US$364.20; no sale recorded 2023-09-11: US$48.39; no sale recorded 2023-10-25: US$366.33; no sale recorded 2023-10-25: US$365.93; no sale recorded 2023-12-28: US$361.00; no sale recorded 2023-12-29: US$169.80; no sale recorded 2024-01-02: US$377.86; no sale recorded 2024-01-02: US$377.87; no sale recorded 2024-01-04: US$366.73; no sale recorded 2024-01-04: US$366.60; no sale recorded 2024-01-09: US$169.00; no sale recorded 2024-03-26: US$369.00; no sale recorded 2024-03-26: US$367.00; no sale recorded 2024-03-26: US$364.00; no sale recorded 2024-03-26: US$359.00; no sale recorded 2024-03-31: US$152.00; no sale recorded 2024-03-31: US$99.00; no sale recorded 2024-04-08: US$339.00; no sale recorded 2024-04-09: US$169.00; no sale recorded 2024-04-11: US$198.00; no sale recorded 2024-04-13: US$152.75; sold recorded 2024-05-10: US$342.39; sold recorded 2024-05-28: US$368.00; sold recorded 2024-06-06: US$345.78; no sale recorded 2024-06-15: US$200.00; no sale recorded 2024-06-25: US$153.23; no sale recorded 2024-06-25: US$153.43; no sale recorded 2024-06-25: US$153.53; no sale recorded 2024-06-25: US$153.63; no sale recorded 2024-06-25: US$153.93; no sale recorded 2024-06-25: US$153.83; no sale recorded 2024-06-25: US$153.73; no sale recorded 2024-06-25: US$152.33; no sale recorded 2024-06-25: US$152.43; no sale recorded 2024-06-25: US$153.03; no sale recorded 2024-06-25: US$152.53; no sale recorded 2024-06-25: US$152.63; no sale recorded 2024-06-25: US$152.93; no sale recorded 2024-06-25: US$152.73; no sale recorded 2024-06-25: US$152.83; no sale recorded 2024-06-28: US$364.76; no sale recorded 2024-07-21: US$197.64; no sale recorded 2024-10-18: US$546.47; no sale recorded 2024-10-23: US$380.00; no sale recorded 2024-11-07: US$377.42; no sale recorded 2024-12-23: US$368.68; no sale recorded 2025-03-12: US$362.60; no sale recorded 2025-04-27: US$151.90; no sale recorded 2025-05-07: US$500.00; no sale recorded 2025-05-17: US$144.00; no sale recorded 2025-05-30: US$199.52; no sale recorded 2025-06-06: US$99.00; no sale recorded 2025-06-09: US$150.00; no sale recorded 2025-06-18: US$153.93; no sale recorded 2025-06-23: US$169.10; no sale recorded 2025-06-24: US$168.33; no sale recorded 2025-06-26: US$180.00; no sale recorded 2025-07-01: US$199.99; no sale recorded 2025-07-24: US$159.00; no sale recorded 2025-08-01: US$388.36; no sale recorded 2025-08-02: US$153.00; no sale recorded 2025-08-08: US$369.75; no sale recorded 2025-08-11: US$212.01; no sale recorded 2025-08-11: US$172.00; no sale recorded 2025-08-14: US$196.52; no sale recorded 2025-08-19: US$222.01; no sale recorded 2025-08-28: US$154.02; no sale recorded 2025-09-01: US$154.03; no sale recorded 2025-09-01: US$154.03; no sale recorded 2025-09-05: US$99.00; no sale recorded 2025-09-07: US$154.03; no sale recorded 2025-09-09: US$113.63; no sale recorded 2025-09-09: US$114.53; no sale recorded 2025-09-09: US$114.03; no sale recorded 2025-09-28: US$247.55; no sale recorded 2025-10-05: US$200.00; no sale recorded 2025-10-22: US$544.85; no sale recorded 2025-10-23: US$400.00; no sale recorded 2025-11-15: US$113.12; no sale recorded 2025-11-19: US$153.50; no sale recorded 2025-12-18: US$288.15; no sale recorded 2025-12-18: US$158.00; no sale recorded 2026-01-03: US$97.86; no sale recorded 2026-01-12: US$165.00; no sale recorded 2026-01-12: US$389.28; no sale recorded 2026-01-12: US$392.28; no sale recorded 2026-01-12: US$162.20; no sale recorded 2026-01-12: US$389.00; no sale recorded 2026-01-14: US$297.55; no sale recorded 2026-01-14: US$166.00; no sale recorded 2026-01-17: US$169.70; no sale recorded 2026-01-22: US$164.50; no sale recorded 2026-03-07: US$175.00; no sale recorded 2026-03-10: US$347.47; no sale recorded 2026-03-11: US$169.20; no sale recorded 2026-03-17: US$225.00; no sale recorded 2026-03-25: US$39.00; no sale recorded 2026-03-27: US$394.58; no sale recorded 2026-04-03: US$358.37; no sale recorded 2026-04-06: US$175.00; no sale recorded 2026-04-08: US$377.30; no sale recorded 2026-04-09: US$159.20; no sale recorded 2026-04-09: US$169.00; no sale recorded 2026-04-13: US$175.00; no sale recorded 2026-04-17: US$145.97; no sale recorded 2026-04-22: US$164.50; no sale recorded 2026-04-23: US$667.68; no sale recorded 2026-04-25: US$128.00; no sale recorded 2026-04-25: US$135.00; no sale recorded 2026-04-29: US$155.50; no sale recorded 2026-04-29: US$147.37; no sale recorded 2026-05-10: US$145.97; no sale recorded 2026-05-17: US$145.92; no sale recorded 2026-05-20: US$175.00; no sale recorded 2026-05-20: US$374.56; no sale recorded 2026-05-23: US$400.00; no sale recorded 2026-05-27: US$159.60; no sale recorded 2026-06-04: US$113.43; no sale recorded 2026-06-08: US$130.00; no sale recorded 2026-06-08: US$134.90; no sale recorded 2026-06-11: US$389.28; no sale recorded 2026-06-19: US$175.00; no sale recorded 2026-06-19: US$175.00; no sale recorded 2026-06-19: US$175.00; no sale recorded 2026-06-24: US$387.32; no sale recorded 2026-06-28: US$199.52; no sale recorded 2026-07-07: US$159.00; no sale recorded 2026-07-14: US$166.00; no sale recorded 2026-08-14: US$166.00; no sale recorded 2026-09-14: US$166.00; no sale recorded 2026-09-16: US$155.50; no sale recorded 2026-10-14: US$166.00; no sale recorded 2026-10-23: US$129.35; no sale recorded 2026-10-23: US$158.24; no sale recorded Recorded US-dollar price history Linear price scale. Horizontal axis: listing start date. Vertical axis: recorded price in US dollars. Filled dots have recorded sales; open dots have no recorded sales. The oxide step line shows calendar-month medians, with gaps for missing months. 0.00 500.00 1000.00 1500.00 2000.00 Apr 2018 Jul 2022 Oct 2026 2018-04-15: US$127.47; sold recorded 2018-08-06: US$125.99; sold recorded 2019-12-25: US$272.00; no sale recorded 2020-03-16: US$180.00; no sale recorded 2020-03-17: US$69.00; sold recorded 2020-07-25: US$290.00; no sale recorded 2020-07-25: US$289.90; no sale recorded 2020-07-25: US$285.00; no sale recorded 2020-07-25: US$288.00; no sale recorded 2020-10-05: US$195.00; no sale recorded 2020-10-10: US$29.99; no sale recorded 2020-11-13: US$284.90; no sale recorded 2020-11-13: US$289.90; no sale recorded 2020-11-13: US$287.90; no sale recorded 2020-11-13: US$289.80; no sale recorded 2020-11-18: US$130.00; no sale recorded 2020-11-20: US$188.55; no sale recorded 2021-01-06: US$283.00; no sale recorded 2021-03-16: US$289.80; no sale recorded 2021-03-18: US$289.79; no sale recorded 2021-03-18: US$289.77; no sale recorded 2021-03-19: US$287.00; no sale recorded 2021-04-15: US$289.80; no sale recorded 2021-04-15: US$287.90; no sale recorded 2021-04-15: US$289.90; no sale recorded 2021-04-15: US$284.90; no sale recorded 2021-04-16: US$280.99; no sale recorded 2021-04-18: US$83.79; sold recorded 2021-05-23: US$260.00; no sale recorded 2021-05-23: US$78.95; no sale recorded 2021-06-11: US$381.00; no sale recorded 2022-01-20: US$343.50; no sale recorded 2022-01-26: US$363.09; no sale recorded 2022-02-08: US$358.44; no sale recorded 2022-03-03: US$230.00; no sale recorded 2022-03-29: US$366.58; no sale recorded 2022-03-29: US$360.40; no sale recorded 2022-03-29: US$366.60; no sale recorded 2022-03-29: US$366.60; no sale recorded 2022-03-29: US$366.59; no sale recorded 2022-03-29: US$364.20; no sale recorded 2022-04-21: US$416.02; no sale recorded 2022-04-28: US$504.15; no sale recorded 2022-05-12: US$127.00; sold recorded 2022-06-24: US$387.32; no sale recorded 2022-06-28: US$366.56; no sale recorded 2022-06-28: US$366.59; no sale recorded 2022-06-28: US$366.73; no sale recorded 2022-06-28: US$364.20; no sale recorded 2022-06-28: US$366.58; no sale recorded 2022-06-28: US$366.60; no sale recorded 2022-06-28: US$366.60; no sale recorded 2022-07-14: US$365.33; no sale recorded 2022-07-14: US$365.53; no sale recorded 2022-07-15: US$366.33; no sale recorded 2022-07-19: US$369.00; no sale recorded 2022-09-13: US$360.00; no sale recorded 2022-09-15: US$377.85; no sale recorded 2022-09-15: US$377.87; no sale recorded 2022-09-23: US$364.20; no sale recorded 2022-09-23: US$360.40; no sale recorded 2022-09-29: US$78.95; no sale recorded 2022-10-06: US$369.00; no sale recorded 2022-10-11: US$365.93; no sale recorded 2022-10-11: US$365.73; no sale recorded 2022-10-11: US$365.63; no sale recorded 2022-10-11: US$365.33; no sale recorded 2022-10-24: US$227.50; no sale recorded 2022-11-15: US$377.88; no sale recorded 2022-12-08: US$373.46; no sale recorded 2023-01-05: US$365.83; no sale recorded 2023-01-05: US$365.63; no sale recorded 2023-01-05: US$365.93; no sale recorded 2023-01-14: US$263.12; no sale recorded 2023-01-16: US$143.06; no sale recorded 2023-02-09: US$377.88; no sale recorded 2023-02-15: US$475.00; no sale recorded 2023-02-27: US$992.31; no sale recorded 2023-03-06: US$363.99; no sale recorded 2023-03-16: US$229.00; no sale recorded 2023-03-16: US$490.66; sold recorded 2023-04-03: US$365.83; no sale recorded 2023-04-03: US$366.33; no sale recorded 2023-04-08: US$377.85; no sale recorded 2023-04-08: US$377.88; no sale recorded 2023-04-15: US$375.26; no sale recorded 2023-04-19: US$376.00; sold recorded 2023-04-21: US$99.00; sold recorded 2023-05-08: US$103.14; no sale recorded 2023-05-16: US$364.20; no sale recorded 2023-05-18: US$145.36; no sale recorded 2023-05-29: US$143.06; no sale recorded 2023-06-09: US$159.20; no sale recorded 2023-06-13: US$390.58; no sale recorded 2023-06-19: US$149.96; sold recorded 2023-07-04: US$366.30; no sale recorded 2023-07-10: US$364.20; no sale recorded 2023-07-10: US$366.58; no sale recorded 2023-07-10: US$366.56; no sale recorded 2023-07-10: US$366.60; no sale recorded 2023-07-10: US$360.40; no sale recorded 2023-07-14: US$152.72; no sale recorded 2023-07-20: US$72.99; no sale recorded 2023-07-24: US$357.20; no sale recorded 2023-08-30: US$365.93; no sale recorded 2023-08-30: US$365.33; no sale recorded 2023-08-30: US$365.73; no sale recorded 2023-08-30: US$366.33; no sale recorded 2023-09-08: US$366.73; no sale recorded 2023-09-08: US$360.40; no sale recorded 2023-09-08: US$366.58; no sale recorded 2023-09-08: US$366.60; no sale recorded 2023-09-08: US$366.59; no sale recorded 2023-09-08: US$364.20; no sale recorded 2023-09-11: US$48.39; no sale recorded 2023-10-25: US$366.33; no sale recorded 2023-10-25: US$365.93; no sale recorded 2023-12-28: US$361.00; no sale recorded 2023-12-29: US$169.80; no sale recorded 2024-01-02: US$377.86; no sale recorded 2024-01-02: US$377.87; no sale recorded 2024-01-04: US$366.73; no sale recorded 2024-01-04: US$366.60; no sale recorded 2024-01-09: US$169.00; no sale recorded 2024-03-26: US$369.00; no sale recorded 2024-03-26: US$367.00; no sale recorded 2024-03-26: US$364.00; no sale recorded 2024-03-26: US$359.00; no sale recorded 2024-03-31: US$152.00; no sale recorded 2024-03-31: US$99.00; no sale recorded 2024-04-08: US$339.00; no sale recorded 2024-04-09: US$169.00; no sale recorded 2024-04-11: US$198.00; no sale recorded 2024-04-13: US$152.75; sold recorded 2024-05-10: US$342.39; sold recorded 2024-05-28: US$368.00; sold recorded 2024-06-06: US$345.78; no sale recorded 2024-06-15: US$200.00; no sale recorded 2024-06-25: US$153.23; no sale recorded 2024-06-25: US$153.43; no sale recorded 2024-06-25: US$153.53; no sale recorded 2024-06-25: US$153.63; no sale recorded 2024-06-25: US$153.93; no sale recorded 2024-06-25: US$153.83; no sale recorded 2024-06-25: US$153.73; no sale recorded 2024-06-25: US$152.33; no sale recorded 2024-06-25: US$152.43; no sale recorded 2024-06-25: US$153.03; no sale recorded 2024-06-25: US$152.53; no sale recorded 2024-06-25: US$152.63; no sale recorded 2024-06-25: US$152.93; no sale recorded 2024-06-25: US$152.73; no sale recorded 2024-06-25: US$152.83; no sale recorded 2024-06-28: US$364.76; no sale recorded 2024-07-21: US$197.64; no sale recorded 2024-10-18: US$546.47; no sale recorded 2024-10-23: US$380.00; no sale recorded 2024-11-07: US$377.42; no sale recorded 2024-12-23: US$368.68; no sale recorded 2025-03-12: US$362.60; no sale recorded 2025-04-27: US$151.90; no sale recorded 2025-05-07: US$500.00; no sale recorded 2025-05-17: US$144.00; no sale recorded 2025-05-30: US$199.52; no sale recorded 2025-06-06: US$99.00; no sale recorded 2025-06-09: US$150.00; no sale recorded 2025-06-18: US$153.93; no sale recorded 2025-06-23: US$169.10; no sale recorded 2025-06-24: US$168.33; no sale recorded 2025-06-26: US$180.00; no sale recorded 2025-07-01: US$199.99; no sale recorded 2025-07-24: US$159.00; no sale recorded 2025-08-01: US$388.36; no sale recorded 2025-08-02: US$153.00; no sale recorded 2025-08-08: US$369.75; no sale recorded 2025-08-11: US$212.01; no sale recorded 2025-08-11: US$172.00; no sale recorded 2025-08-14: US$196.52; no sale recorded 2025-08-19: US$222.01; no sale recorded 2025-08-28: US$154.02; no sale recorded 2025-09-01: US$154.03; no sale recorded 2025-09-01: US$154.03; no sale recorded 2025-09-05: US$99.00; no sale recorded 2025-09-07: US$154.03; no sale recorded 2025-09-09: US$113.63; no sale recorded 2025-09-09: US$114.53; no sale recorded 2025-09-09: US$114.03; no sale recorded 2025-09-28: US$247.55; no sale recorded 2025-10-05: US$200.00; no sale recorded 2025-10-22: US$544.85; no sale recorded 2025-10-23: US$400.00; no sale recorded 2025-11-15: US$113.12; no sale recorded 2025-11-19: US$153.50; no sale recorded 2025-12-18: US$288.15; no sale recorded 2025-12-18: US$158.00; no sale recorded 2026-01-03: US$97.86; no sale recorded 2026-01-12: US$165.00; no sale recorded 2026-01-12: US$389.28; no sale recorded 2026-01-12: US$392.28; no sale recorded 2026-01-12: US$162.20; no sale recorded 2026-01-12: US$389.00; no sale recorded 2026-01-14: US$297.55; no sale recorded 2026-01-14: US$166.00; no sale recorded 2026-01-17: US$169.70; no sale recorded 2026-01-22: US$164.50; no sale recorded 2026-03-07: US$175.00; no sale recorded 2026-03-10: US$347.47; no sale recorded 2026-03-11: US$169.20; no sale recorded 2026-03-17: US$225.00; no sale recorded 2026-03-25: US$39.00; no sale recorded 2026-03-27: US$394.58; no sale recorded 2026-04-03: US$358.37; no sale recorded 2026-04-06: US$175.00; no sale recorded 2026-04-08: US$377.30; no sale recorded 2026-04-09: US$159.20; no sale recorded 2026-04-09: US$169.00; no sale recorded 2026-04-13: US$175.00; no sale recorded 2026-04-17: US$145.97; no sale recorded 2026-04-22: US$164.50; no sale recorded 2026-04-23: US$667.68; no sale recorded 2026-04-25: US$128.00; no sale recorded 2026-04-25: US$135.00; no sale recorded 2026-04-29: US$155.50; no sale recorded 2026-04-29: US$147.37; no sale recorded 2026-05-10: US$145.97; no sale recorded 2026-05-17: US$145.92; no sale recorded 2026-05-20: US$175.00; no sale recorded 2026-05-20: US$374.56; no sale recorded 2026-05-23: US$400.00; no sale recorded 2026-05-27: US$159.60; no sale recorded 2026-06-04: US$113.43; no sale recorded 2026-06-08: US$130.00; no sale recorded 2026-06-08: US$134.90; no sale recorded 2026-06-11: US$389.28; no sale recorded 2026-06-19: US$175.00; no sale recorded 2026-06-19: US$175.00; no sale recorded 2026-06-19: US$175.00; no sale recorded 2026-06-24: US$387.32; no sale recorded 2026-06-28: US$199.52; no sale recorded 2026-07-07: US$159.00; no sale recorded 2026-07-14: US$166.00; no sale recorded 2026-08-14: US$166.00; no sale recorded 2026-09-14: US$166.00; no sale recorded 2026-09-16: US$155.50; no sale recorded 2026-10-14: US$166.00; no sale recorded 2026-10-23: US$129.35; no sale recorded 2026-10-23: US$158.24; no sale recorded Sold recorded No sale recorded Monthly median
Linear price scale. Dates are listing starts.
Median recorded price, all years $284.90 247 plotted records from 247 US-dollar records in this range. Monthly medians use all records in each calendar month.