Skip to main content
Recent Quotes
My Watchlist
Indicators
Markets
Stocks
ETFs
Tools
Overview
News
Currencies
International
Treasuries

Nuveen Arizona Quality Municipal Income Fund (NY: NAZ )

10.82 UNCHANGED
Streaming Delayed Price Updated: 7:00 PM EDT, May 22, 2024 Add to My Watchlist
Quote
Overview Detailed Quote Charting Historical Prices
News
All News News Headlines Press Releases
Research
Quarterly Reports Insider Filings Other Filings

Historical Prices

Month:
Year:
Range:
Date Open High Low Close Volume Change (%)
Dec 31, 2002 7.658 7.699 7.658 7.683 10,122 +0.04(+0.46%)
Dec 30, 2002 7.598 7.648 7.532 7.648 14,488 +0.07(+0.93%)
Dec 27, 2002 7.482 7.578 7.482 7.578 9,725 +0.10(+1.28%)
Dec 26, 2002 7.427 7.482 7.427 7.482 9,725 +0.08(+1.02%)
Dec 24, 2002 7.391 7.447 7.391 7.406 7,740 +0.03(+0.34%)
Dec 23, 2002 7.356 7.432 7.331 7.381 26,199 -0.01(-0.14%)
Dec 20, 2002 7.361 7.396 7.331 7.391 41,481 +0.01(+0.14%)
Dec 19, 2002 7.437 7.437 7.381 7.381 11,114 -0.05(-0.68%)
Dec 18, 2002 7.507 7.507 7.406 7.432 47,436 -0.05(-0.61%)
Dec 17, 2002 7.482 7.482 7.411 7.477 12,305 -0.02(-0.27%)
Dec 16, 2002 7.482 7.507 7.462 7.497 12,901 -0.04(-0.47%)
Dec 13, 2002 7.482 7.532 7.432 7.532 19,847 +0.02(+0.20%)
Dec 12, 2002 7.507 7.517 7.406 7.517 46,245 -0.04(-0.53%)
Dec 11, 2002 7.547 7.558 7.547 7.558 4,763 +0.00(+0.00%)
Dec 10, 2002 7.517 7.558 7.507 7.558 30,962 +0.05(+0.67%)
Dec 09, 2002 7.583 7.583 7.447 7.507 22,626 -0.13(-1.65%)
Dec 06, 2002 7.613 7.643 7.537 7.633 17,267 +0.03(+0.33%)
Dec 05, 2002 7.583 7.633 7.558 7.608 33,542 +0.00(+0.00%)
Dec 04, 2002 7.583 7.668 7.583 7.608 22,626 -0.03(-0.33%)
Dec 03, 2002 7.643 7.643 7.633 7.633 2,977 -0.01(-0.07%)
Dec 02, 2002 7.638 7.653 7.583 7.638 6,351 +0.00(+0.00%)
Nov 29, 2002 7.633 7.638 7.618 7.638 4,763 +0.02(+0.26%)
Nov 27, 2002 7.653 7.653 7.618 7.618 8,534 -0.04(-0.46%)
Nov 26, 2002 7.598 7.653 7.598 7.653 9,725 +0.08(+1.00%)
Nov 25, 2002 7.648 7.648 7.558 7.578 15,282 -0.06(-0.73%)
Nov 22, 2002 7.573 7.633 7.573 7.633 24,015 +0.08(+1.00%)
Nov 21, 2002 7.532 7.578 7.532 7.558 20,443 +0.00(+0.00%)
Nov 20, 2002 7.658 7.658 7.457 7.558 78,001 -0.13(-1.64%)
Nov 19, 2002 7.709 7.734 7.658 7.683 21,435 -0.08(-0.97%)
Nov 18, 2002 7.809 7.809 7.739 7.759 8,534 -0.05(-0.58%)
Nov 15, 2002 7.809 7.809 7.789 7.804 4,564 -0.03(-0.39%)
Nov 14, 2002 7.835 7.835 7.835 7.835 793 +0.02(+0.19%)
Nov 13, 2002 7.820 7.820 7.799 7.820 9,526 -0.04(-0.51%)
Nov 12, 2002 7.910 7.910 7.860 7.860 7,542 -0.05(-0.64%)
Nov 11, 2002 7.910 7.910 7.910 7.910 595 -0.01(-0.13%)
Nov 08, 2002 8.061 8.061 7.885 7.920 14,488 -0.09(-1.13%)
Nov 07, 2002 7.996 8.011 7.996 8.011 2,977 +0.02(+0.19%)
Nov 06, 2002 7.971 7.996 7.971 7.996 2,381 +0.01(+0.13%)
Nov 05, 2002 8.001 8.001 7.986 7.986 4,168 -0.02(-0.19%)
Nov 04, 2002 8.011 8.036 7.951 8.001 8,931 -0.01(-0.13%)
Nov 01, 2002 8.036 8.036 8.006 8.011 2,977 -0.03(-0.31%)
Oct 31, 2002 7.910 8.036 7.865 8.036 17,664 +0.16(+1.98%)
Oct 30, 2002 7.885 7.900 7.850 7.880 12,702 +0.02(+0.19%)
Oct 29, 2002 7.935 8.011 7.850 7.865 23,618 -0.02(-0.26%)
Oct 28, 2002 7.885 7.930 7.885 7.885 10,122 +0.03(+0.32%)
Oct 25, 2002 7.860 7.900 7.860 7.860 6,152 -0.05(-0.64%)
Oct 24, 2002 7.683 7.910 7.683 7.910 18,458 +0.18(+2.35%)
Oct 23, 2002 7.900 7.900 7.658 7.729 19,252 -0.18(-2.29%)
Oct 22, 2002 7.961 7.961 7.809 7.910 16,473 -0.05(-0.63%)
Oct 21, 2002 7.986 8.021 7.961 7.961 17,862 -0.07(-0.82%)
Oct 18, 2002 8.031 8.036 7.991 8.026 8,534 -0.02(-0.19%)
Oct 17, 2002 8.087 8.087 8.011 8.041 7,542 -0.07(-0.87%)
Oct 16, 2002 8.071 8.112 8.061 8.112 7,939 +0.00(+0.00%)
Oct 15, 2002 8.112 8.162 8.011 8.112 25,802 -0.01(-0.06%)
Oct 14, 2002 8.137 8.137 8.117 8.117 496,193 +0.00(+0.00%)
Oct 11, 2002 8.147 8.147 8.117 8.117 2,580 -0.03(-0.37%)
Oct 10, 2002 8.147 8.162 8.147 8.147 3,374 -0.04(-0.49%)
Oct 09, 2002 8.137 8.213 8.137 8.187 14,687 +0.06(+0.74%)
Oct 08, 2002 8.187 8.187 8.122 8.127 16,870 -0.06(-0.74%)
Oct 07, 2002 8.233 8.233 8.187 8.187 6,549 -0.03(-0.31%)
Oct 04, 2002 8.202 8.213 8.192 8.213 4,366 -0.01(-0.06%)
Oct 03, 2002 8.243 8.243 8.218 8.218 1,984 -0.02(-0.24%)
Oct 02, 2002 8.213 8.243 8.213 8.238 2,580 +0.04(+0.43%)
Oct 01, 2002 8.268 8.283 8.202 8.202 20,244 -0.04(-0.49%)
Sep 30, 2002 8.263 8.308 8.243 8.243 18,259 -0.06(-0.73%)
Sep 27, 2002 8.344 8.344 8.268 8.303 11,710 -0.07(-0.84%)
Sep 26, 2002 8.333 8.374 8.333 8.374 4,763 -0.01(-0.12%)
Sep 25, 2002 8.333 8.384 8.333 8.384 615,280 +0.03(+0.36%)
Sep 24, 2002 8.374 8.374 8.338 8.354 3,771 -0.02(-0.24%)
Sep 23, 2002 8.364 8.374 8.338 8.374 12,107 -0.06(-0.72%)
Sep 20, 2002 8.414 8.434 8.414 8.434 1,587 +0.02(+0.24%)
Sep 19, 2002 8.389 8.414 8.369 8.414 11,511 -0.02(-0.24%)
Sep 18, 2002 8.464 8.464 8.424 8.434 17,664 -0.04(-0.48%)
Sep 17, 2002 8.464 8.475 8.464 8.475 1,389 +0.04(+0.42%)
Sep 16, 2002 8.389 8.439 8.338 8.439 24,214 -0.05(-0.59%)
Sep 13, 2002 8.490 8.490 8.449 8.490 5,557 +0.03(+0.30%)
Sep 12, 2002 8.515 8.565 8.464 8.464 9,526 -0.02(-0.18%)
Sep 11, 2002 8.480 8.480 8.480 8.480 198 -0.04(-0.41%)
Sep 10, 2002 8.515 8.515 8.515 8.515 793 -0.02(-0.24%)
Sep 09, 2002 8.560 8.560 8.535 8.535 6,549 -0.02(-0.24%)
Sep 06, 2002 8.480 8.555 8.464 8.555 12,901 +0.03(+0.30%)
Sep 05, 2002 8.530 8.530 8.530 8.530 198 +0.02(+0.24%)
Sep 04, 2002 8.515 8.515 8.464 8.510 9,129 +0.03(+0.36%)
Sep 03, 2002 8.540 8.540 8.480 8.480 8,931 -0.06(-0.71%)
Aug 30, 2002 8.525 8.540 8.525 8.540 1,190 +0.02(+0.18%)
Aug 29, 2002 8.525 8.525 8.525 8.525 0 +0.00(+0.00%)
Aug 28, 2002 8.525 8.525 8.525 8.525 992 +0.01(+0.12%)
Aug 27, 2002 8.510 8.540 8.459 8.515 7,145 +0.00(+0.00%)
Aug 26, 2002 8.550 8.550 8.515 8.515 7,740 +0.02(+0.18%)
Aug 23, 2002 8.515 8.560 8.480 8.500 18,458 -0.03(-0.35%)
Aug 22, 2002 8.500 8.540 8.495 8.530 5,755 +0.02(+0.18%)
Aug 21, 2002 8.495 8.545 8.495 8.515 7,740 +0.02(+0.24%)
Aug 20, 2002 8.495 8.495 8.495 8.495 992 -0.02(-0.24%)
Aug 16, 2002 8.495 8.515 8.495 8.515 4,564 +0.00(+0.00%)
Aug 15, 2002 8.540 8.540 8.515 8.515 1,786 +0.03(+0.30%)
Aug 14, 2002 8.515 8.515 8.490 8.490 2,778 -0.08(-0.88%)
Aug 13, 2002 8.540 8.626 8.515 8.565 15,679 +0.03(+0.29%)
Aug 12, 2002 8.565 8.590 8.540 8.540 15,878 -0.03(-0.29%)
Aug 07, 2002 8.540 8.565 8.540 8.565 2,778 +0.03(+0.29%)
Aug 06, 2002 8.590 8.590 8.540 8.540 5,954 -0.05(-0.59%)
Aug 05, 2002 8.565 8.590 8.565 8.590 3,969 +0.03(+0.29%)
Aug 02, 2002 8.585 8.585 8.565 8.565 1,984 +0.00(+0.00%)
Aug 01, 2002 8.565 8.626 8.565 8.565 4,763 +0.05(+0.59%)
Jul 31, 2002 8.490 8.606 8.490 8.515 33,939 +0.03(+0.30%)
Jul 30, 2002 8.409 8.490 8.409 8.490 5,954 +0.05(+0.54%)
Jul 29, 2002 8.490 8.525 8.444 8.444 8,336 -0.08(-0.89%)
Jul 26, 2002 8.520 8.520 8.520 8.520 0 +0.00(+0.00%)
Jul 25, 2002 8.490 8.520 8.419 8.520 11,908 +0.04(+0.48%)
Jul 24, 2002 8.394 8.480 8.389 8.480 10,122 +0.09(+1.02%)
Jul 23, 2002 8.394 8.394 8.394 8.394 0 +0.00(+0.00%)
Jul 22, 2002 8.394 8.394 8.394 8.394 2,580 +0.01(+0.06%)
Jul 19, 2002 8.464 8.464 8.389 8.389 14,091 -0.17(-1.94%)
Jul 17, 2002 8.661 8.661 8.540 8.555 23,023 -0.06(-0.70%)
Jul 12, 2002 8.767 8.767 8.565 8.616 26,000 -0.15(-1.72%)
Jul 11, 2002 8.716 8.767 8.676 8.767 12,504 +0.03(+0.29%)
Jul 10, 2002 8.767 8.792 8.716 8.742 13,099 -0.03(-0.29%)
Jul 09, 2002 8.767 8.767 8.767 8.767 7,740 +0.00(+0.00%)
Jul 08, 2002 8.792 8.792 8.767 8.767 10,916 -0.03(-0.29%)
Jul 05, 2002 8.792 8.867 8.792 8.792 10,122 +0.05(+0.58%)
Jul 04, 2002 8.696 8.742 8.696 8.742 11,114 +0.00(+0.00%)
Jul 03, 2002 8.696 8.742 8.696 8.742 11,114 +0.03(+0.29%)
Jul 02, 2002 8.691 8.716 8.691 8.716 8,137 +0.05(+0.58%)
Jul 01, 2002 8.676 8.676 8.666 8.666 3,175 +0.01(+0.12%)
Jun 28, 2002 8.696 8.696 8.656 8.656 7,939 -0.04(-0.46%)
Jun 27, 2002 8.666 8.696 8.616 8.696 15,282 +0.04(+0.41%)
Jun 26, 2002 8.575 8.661 8.575 8.661 3,771 +0.08(+0.94%)
Jun 25, 2002 8.540 8.580 8.515 8.580 5,755 +0.02(+0.18%)
Jun 21, 2002 8.555 8.616 8.510 8.565 7,542 +0.06(+0.65%)
Jun 20, 2002 8.540 8.550 8.510 8.510 5,358 +0.02(+0.24%)
Jun 19, 2002 8.490 8.540 8.464 8.490 10,122 -0.05(-0.53%)
Jun 18, 2002 8.540 8.540 8.464 8.535 12,702 +0.12(+1.44%)
Jun 17, 2002 8.449 8.449 8.414 8.414 3,969 -0.01(-0.12%)
Jun 14, 2002 8.389 8.490 8.389 8.424 6,549 +0.06(+0.72%)
Jun 12, 2002 8.389 8.424 8.338 8.364 18,259 +0.00(+0.00%)
Jun 11, 2002 8.424 8.444 8.364 8.364 35,924 +0.07(+0.79%)
Jun 10, 2002 8.288 8.364 8.288 8.298 19,252 +0.02(+0.24%)
Jun 07, 2002 8.238 8.278 8.238 8.278 19,053 -0.09(-1.02%)
Jun 06, 2002 8.414 8.424 8.364 8.364 2,580 +0.01(+0.12%)
Jun 05, 2002 8.379 8.384 8.354 8.354 5,557 +0.07(+0.79%)
May 31, 2002 8.338 8.338 8.278 8.288 16,275 +0.00(+0.00%)
May 28, 2002 8.288 8.313 8.288 8.288 3,374 +0.00(+0.00%)
May 27, 2002 8.288 8.288 8.288 8.288 2,977 +0.00(+0.00%)
May 24, 2002 8.288 8.288 8.288 8.288 2,977 -0.03(-0.30%)
May 23, 2002 8.303 8.344 8.288 8.313 8,534 +0.00(+0.00%)
May 22, 2002 8.288 8.333 8.288 8.313 3,969 +0.00(+0.00%)
May 21, 2002 8.293 8.364 8.293 8.313 7,939 +0.02(+0.18%)
May 20, 2002 8.389 8.389 8.288 8.298 15,084 -0.06(-0.66%)
May 17, 2002 8.354 8.354 8.354 8.354 1,984 -0.03(-0.36%)
May 16, 2002 8.404 8.414 8.379 8.384 5,755 +0.03(+0.36%)
May 15, 2002 8.359 8.359 8.354 8.354 3,374 +0.01(+0.06%)
May 14, 2002 8.349 8.439 8.349 8.349 16,473 +0.01(+0.12%)
May 13, 2002 8.338 8.364 8.338 8.338 6,946 -0.02(-0.18%)
May 10, 2002 8.354 8.354 8.354 8.354 1,389 -0.04(-0.42%)
May 09, 2002 8.389 8.394 8.338 8.389 5,954 +0.00(+0.00%)
May 08, 2002 8.364 8.389 8.338 8.389 14,885 +0.03(+0.30%)
May 07, 2002 8.338 8.404 8.328 8.364 7,740 +0.00(+0.00%)
May 06, 2002 8.313 8.364 8.288 8.364 11,313 +0.03(+0.30%)
May 03, 2002 8.338 8.338 8.338 8.338 2,778 +0.05(+0.61%)
May 02, 2002 8.263 8.288 8.263 8.288 396 +0.05(+0.61%)
May 01, 2002 8.238 8.313 8.238 8.238 4,564 -0.03(-0.30%)
Apr 30, 2002 8.288 8.313 8.263 8.263 4,366 +0.00(+0.00%)
Apr 29, 2002 8.263 8.263 8.263 8.263 992 +0.00(+0.00%)
Apr 26, 2002 8.263 8.263 8.263 8.263 0 +0.00(+0.00%)
Apr 25, 2002 8.263 8.263 8.263 8.263 1,786 +0.00(+0.00%)
Apr 24, 2002 8.263 8.263 8.253 8.263 4,168 -0.04(-0.49%)
Apr 23, 2002 8.288 8.303 8.283 8.303 7,145 +0.04(+0.49%)
Apr 22, 2002 8.313 8.313 8.263 8.263 4,564 +0.03(+0.31%)
Apr 19, 2002 8.202 8.318 8.202 8.238 30,367 +0.04(+0.43%)
Apr 18, 2002 8.202 8.202 8.202 8.202 3,175 +0.04(+0.49%)
Apr 17, 2002 8.162 8.162 8.162 8.162 2,183 -0.04(-0.49%)
Apr 16, 2002 8.202 8.202 8.202 8.202 0 +0.00(+0.00%)
Apr 15, 2002 8.162 8.202 8.162 8.202 3,969 -0.01(-0.06%)
Apr 12, 2002 8.162 8.207 8.162 8.207 4,366 +0.02(+0.25%)
Apr 11, 2002 8.187 8.187 8.187 8.187 0 +0.00(+0.00%)
Apr 10, 2002 8.187 8.187 8.187 8.187 396 +0.03(+0.31%)
Apr 09, 2002 8.172 8.172 8.162 8.162 1,984 -0.05(-0.61%)
Apr 08, 2002 8.162 8.213 8.162 8.213 9,526 +0.00(+0.00%)
Apr 05, 2002 8.102 8.213 8.102 8.213 18,061 +0.14(+1.75%)
Apr 04, 2002 8.056 8.071 8.031 8.071 4,961 +0.01(+0.12%)
Apr 03, 2002 8.112 8.112 8.061 8.061 5,358 +0.00(+0.00%)
Apr 02, 2002 8.097 8.097 8.061 8.061 6,748 -0.05(-0.62%)
Apr 01, 2002 8.127 8.147 8.097 8.112 23,817 +0.01(+0.12%)
Mar 29, 2002 7.986 8.102 7.986 8.102 1,210,713 +0.00(+0.00%)
Mar 28, 2002 7.986 8.102 7.986 8.102 12,107 +0.12(+1.45%)
Mar 27, 2002 7.961 7.986 7.961 7.986 1,190 +0.08(+0.96%)
Mar 26, 2002 7.986 7.986 7.885 7.910 23,618 -0.09(-1.13%)
Mar 25, 2002 8.001 8.001 8.001 8.001 3,969 -0.01(-0.06%)
Mar 22, 2002 8.036 8.036 8.006 8.006 7,343 -0.06(-0.69%)
Mar 21, 2002 8.061 8.061 8.061 8.061 1,786 -0.04(-0.50%)
Mar 20, 2002 8.061 8.102 8.061 8.102 1,984 +0.07(+0.82%)
Mar 19, 2002 8.112 8.112 8.036 8.036 10,519 -0.05(-0.62%)
Mar 18, 2002 8.102 8.102 8.031 8.087 21,832 -0.03(-0.31%)
Mar 15, 2002 8.102 8.112 8.102 8.112 1,587 +0.01(+0.12%)
Mar 14, 2002 8.102 8.102 8.102 8.102 0 +0.00(+0.00%)
Mar 13, 2002 8.127 8.127 8.102 8.102 476,346 -0.07(-0.80%)
Mar 12, 2002 8.167 8.167 8.167 8.167 1,984 -0.07(-0.86%)
Mar 11, 2002 8.273 8.273 8.162 8.238 18,259 -0.07(-0.85%)
Mar 08, 2002 8.308 8.308 8.308 8.308 595 +0.03(+0.37%)
Mar 07, 2002 8.338 8.338 8.278 8.278 3,572 -0.01(-0.12%)
Mar 06, 2002 8.288 8.288 8.288 8.288 1,984 -0.06(-0.72%)
Mar 05, 2002 8.207 8.349 8.207 8.349 18,061 +0.10(+1.22%)
Mar 04, 2002 8.248 8.248 8.248 8.248 0 +0.00(+0.00%)
Mar 01, 2002 8.228 8.248 8.228 8.248 2,977 +0.05(+0.61%)
Feb 28, 2002 8.213 8.213 8.197 8.197 1,389 +0.02(+0.25%)
Feb 27, 2002 8.192 8.192 8.177 8.177 2,977 -0.04(-0.43%)
Feb 26, 2002 8.228 8.248 8.213 8.213 6,549 +0.01(+0.06%)
Feb 25, 2002 8.207 8.207 8.207 8.207 2,381 +0.02(+0.25%)
Feb 22, 2002 8.187 8.187 8.187 8.187 1,587 +0.01(+0.12%)
Feb 21, 2002 8.182 8.182 8.177 8.177 8,137 -0.01(-0.06%)
Feb 20, 2002 8.162 8.187 8.162 8.182 635,128 +0.02(+0.19%)
Feb 19, 2002 8.147 8.167 8.147 8.167 8,931 +0.07(+0.87%)
Feb 18, 2002 8.112 8.112 8.097 8.097 3,175 +0.00(+0.00%)
Feb 15, 2002 8.112 8.112 8.097 8.097 3,175 -0.05(-0.62%)
Feb 14, 2002 8.087 8.147 8.087 8.147 7,343 +0.05(+0.56%)
Feb 13, 2002 8.102 8.102 8.102 8.102 1,389 -0.05(-0.62%)
Feb 12, 2002 8.152 8.172 8.152 8.152 9,526 +0.00(+0.00%)
Feb 11, 2002 8.152 8.152 8.152 8.152 4,763 +0.02(+0.19%)
Feb 08, 2002 8.132 8.137 8.132 8.137 4,168 +0.02(+0.19%)
Feb 07, 2002 8.122 8.122 8.122 8.122 0 +0.00(+0.00%)
Feb 06, 2002 8.147 8.147 8.092 8.122 8,534 +0.00(+0.00%)
Feb 05, 2002 8.137 8.137 8.122 8.122 595 -0.02(-0.19%)
Feb 04, 2002 8.142 8.152 8.137 8.137 6,549 +0.00(+0.00%)
Feb 01, 2002 8.142 8.142 8.137 8.137 1,190 +0.00(+0.00%)
Jan 31, 2002 8.147 8.147 8.066 8.137 16,076 +0.05(+0.62%)
Jan 30, 2002 8.087 8.087 8.087 8.087 3,572 +0.00(+0.00%)
Jan 29, 2002 8.061 8.087 8.061 8.087 12,504 +0.00(+0.00%)
Jan 28, 2002 8.087 8.087 8.087 8.087 1,984 -0.04(-0.43%)
Jan 25, 2002 8.122 8.122 8.122 8.122 0 +0.00(+0.00%)
Jan 24, 2002 8.021 8.122 8.011 8.122 22,427 +0.10(+1.26%)
Jan 23, 2002 8.021 8.021 8.021 8.021 396 +0.01(+0.13%)
Jan 22, 2002 8.162 8.162 8.011 8.011 27,588 -0.15(-1.85%)
Jan 21, 2002 8.147 8.162 8.147 8.162 8,336 +0.00(+0.00%)
Jan 18, 2002 8.147 8.162 8.147 8.162 8,336 -0.02(-0.25%)
Jan 17, 2002 8.147 8.182 8.147 8.182 1,071,778 +0.04(+0.43%)
Jan 16, 2002 8.167 8.167 8.122 8.147 9,526 +0.00(+0.00%)
Jan 15, 2002 8.137 8.147 8.137 8.147 5,954 +0.03(+0.31%)
Jan 14, 2002 8.107 8.122 8.107 8.122 13,297 +0.02(+0.19%)
Jan 11, 2002 8.137 8.137 8.046 8.107 12,504 +0.02(+0.25%)
Data & News supplied by www.cloudquote.io
Stock quotes supplied by Barchart
Quotes delayed at least 20 minutes.
By accessing this page, you agree to the following
Privacy Policy and Terms and Conditions.