Knowledge (XXG)

File:National Air Quality Concentration Averages 1990-2015 US EPA.png

Source 📝

38: 251: 215: 94: 535: 552:=={{int:filedesc}}== {{Information |Description={{en|1=Graph, "National Air Quality Concentration Averages", showing decreases in US air pollution concentrations during 1990 to 2015, based on monitoring data for nine air quality parameters.}} |Source=U... 60: 56: 52: 48: 42: 105: 73: 148:
Graph, "National Air Quality Concentration Averages", showing decreases in US air pollution concentrations during 1990 to 2015, based on monitoring data for nine air quality parameters.
234: 230: 534: 529: 226: 64: 37: 577:
This file contains additional information, probably added from the digital camera or scanner used to create or digitize it.
566: 466: 449: 580:
If the file has been modified from its original state, some details may not fully reflect the modified file.
562:
The following pages on the English Knowledge (XXG) use this file (pages on other projects are not listed):
407: 113: 239: 100: 545: 168: 397: 388: 352: 379: 370: 361: 343: 334: 325: 316: 307: 298: 289: 280: 271: 262: 157: 229:
employee, taken or made as part of that person's official duties. As
502:
Click on a date/time to view the file as it appeared at that time.
138:
National Air Quality Concentration Averages 1990-2015 US EPA.png
209: 88: 249: 213: 433:
Add a one-line explanation of what this file represents
398: 389: 178:
U.S. Environmental Protection Agency, Washington, D.C.
78:(1,600 × 1,200 pixels, file size: 209 KB, MIME type: 132: 112:
Commons is a freely licensed media file repository.
353: 169:"Our Nation's Air: Status and Trends Through 2016." 380: 371: 362: 344: 335: 326: 317: 308: 299: 290: 281: 272: 263: 93: 8: 225:This image (or other media) is a work of an 582: 504: 429: 406: 189: 592: 584: 564: 480: 464: 447: 444: 425: 418: 167:U.S. Environmental Protection Agency, 214: 7: 493: 575: 438: 432: 223: 142: 125: 71: 437: 423: 250: 92: 21: 420: 227:Environmental Protection Agency 143: 14: 419: 26: 1: 567:Clean Air Act (United States) 31: 445:Items portrayed in this file 237:, all EPA images are in the 614: 494: 248: 212: 16: 422: 99:This is a file from the 551: 235:U.S. federal government 174: 163: 156: 153: 135: 103:. Information from its 530:22:51, 9 December 2017 255: 219: 106:description page there 41:Size of this preview: 586:Horizontal resolution 253: 217: 65:1,600 × 1,200 pixels 594:Vertical resolution 47:Other resolutions: 256: 220: 61:1,280 × 960 pixels 57:1,024 × 768 pixels 601: 600: 555: 431: 417: 416: 410: 208: 207: 182: 181: 121: 120: 101:Wikimedia Commons 605: 583: 542: 411: 252: 216: 210: 204: 201: 198: 195: 190: 159: 147: 139: 133: 117: 96: 95: 89: 83: 81: 68: 53:640 × 480 pixels 49:320 × 240 pixels 43:800 × 600 pixels 613: 612: 608: 607: 606: 604: 603: 602: 571: 563: 556: 548: 540: 496: 495: 492: 491: 490: 489: 488: 487: 486: 485: 483: 473: 472: 471: 469: 458: 457: 456: 455: 454: 452: 436: 435: 434: 400: 391: 382: 373: 364: 355: 346: 337: 328: 319: 310: 301: 292: 283: 274: 265: 261: 245: 202: 199: 196: 193: 188: 183: 149: 137: 130: 123: 122: 111: 110: 109:is shown below. 85: 79: 77: 70: 69: 46: 12: 11: 5: 611: 609: 599: 598: 595: 591: 590: 587: 574: 570: 569: 561: 560: 559: 554: 553: 550: 546: 543: 539:1,600 × 1,200 537: 532: 527: 523: 522: 519: 516: 513: 510: 507: 500: 499: 484: 481: 479: 478: 477: 476: 475: 474: 470: 465: 463: 462: 461: 460: 459: 453: 448: 446: 443: 442: 441: 440: 439: 428: 427: 424: 421: 415: 414: 412: 258: 257: 247: 221: 206: 205: 187: 184: 180: 179: 176: 172: 171: 165: 161: 160: 155: 151: 150: 140: 131: 129: 126: 124: 119: 118: 97: 87: 86: 40: 36: 35: 34: 29: 24: 19: 13: 10: 9: 6: 4: 3: 2: 610: 596: 593: 588: 585: 581: 578: 572: 568: 565: 557: 549: 544: 538: 536: 533: 531: 528: 525: 524: 520: 517: 514: 511: 508: 506: 505: 503: 497: 468: 451: 413: 409: 405: 401: 396: 392: 387: 383: 378: 374: 369: 365: 360: 356: 351: 347: 342: 338: 333: 329: 324: 320: 315: 311: 306: 302: 297: 293: 288: 284: 279: 275: 270: 266: 260: 259: 246: 244: 242: 241: 240:public domain 236: 232: 228: 222: 218:Public domain 211: 197:Public domain 194:Public domain 192: 191: 185: 177: 173: 170: 166: 162: 152: 146: 141: 134: 127: 115: 108: 107: 102: 98: 91: 90: 84: 75: 74:Original file 66: 62: 58: 54: 50: 44: 39: 33: 30: 28: 25: 23: 20: 18: 15: 579: 576: 501: 498:File history 403: 394: 385: 376: 367: 358: 349: 340: 331: 322: 313: 304: 295: 286: 277: 268: 238: 224: 144: 114:You can help 104: 72: 22:File history 363:slovenščina 136:Description 558:File usage 515:Dimensions 381:українська 327:Nederlands 318:македонски 27:File usage 597:28.35 dpc 589:28.35 dpc 512:Thumbnail 509:Date/Time 467:inception 354:sicilianu 345:português 186:Licensing 145:English: 80:image/png 573:Metadata 541:(209 KB) 426:Captions 300:italiano 254:EPA logo 32:Metadata 547:Moreau1 526:current 521:Comment 450:depicts 430:English 282:English 273:Deutsch 264:العربية 233:of the 128:Summary 76:‎ 402:  393:  384:  375:  366:  357:  348:  339:  336:polski 330:  321:  312:  303:  294:  285:  276:  267:  175:Author 164:Source 291:eesti 231:works 203:false 200:false 518:User 482:2016 399:繁體中文 390:简体中文 158:2016 154:Date 17:File 408:+/− 372:ไทย 309:日本語 63:| 59:| 55:| 51:| 45:. 404:∙ 395:∙ 386:∙ 377:∙ 368:∙ 359:∙ 350:∙ 341:∙ 332:∙ 323:∙ 314:∙ 305:∙ 296:∙ 287:∙ 278:∙ 269:∙ 243:. 116:. 82:) 67:.

Index

File
File history
File usage
Metadata
File:National Air Quality Concentration Averages 1990-2015 US EPA.png
800 × 600 pixels
320 × 240 pixels
640 × 480 pixels
1,024 × 768 pixels
1,280 × 960 pixels
1,600 × 1,200 pixels
Original file
Wikimedia Commons
description page there
You can help
"Our Nation's Air: Status and Trends Through 2016."
Environmental Protection Agency
works
U.S. federal government
public domain
العربية
Deutsch
English
eesti
italiano
日本語
македонски
Nederlands
polski
português

Text is available under the Creative Commons Attribution-ShareAlike License. Additional terms may apply.