Beijing AQI Months Ranked By Highest Low

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Rank Date Average High Low Median Lowest High Highest Low Missing

1 01/01/11 101.47 336 8 76 70 156 72

2 07/01/15 126.55 201 13 140.5 93 157 2

3 05/01/15 127.01 311 25 137 89 160 4

4 06/01/15 115.51 308 8 117 76 162 18

5 05/01/14 142.27 321 29 156 91 163 2

6 08/01/15 105.87 195 13 99 74 164 1

7 09/01/15 103.12 256 4 87 53 167 3

8 07/01/13 138.27 266 33 153 99 170 7

9 09/01/14 136.51 279 8 155 74 171 20

10 08/01/13 130.34 258 21 147 82 172 9

11 06/01/14 126.68 275 13 137 99 172 18

12 05/01/11 131.47 314 21 142 87 174 32

13 08/01/14 127.60 259 8 149 89 175 11

14 09/01/12 116.61 288 4 119 21 177 8

15 05/01/10 153.73 364 17 161 115 181 7

16 06/01/12 158.80 388 4 166 61 183 12

17 04/01/15 146.94 646 4 157 84 185 9

18 04/01/13 124.37 310 16 133 62 188 2

19 05/01/13 157.67 370 38 160.5 156 188 36

20 06/01/13 177.04 477 33 177 89 192 32

21 04/01/14 164.56 553 17 167 134 193 3

22 05/01/12 157.42 362 21 166 119 196 53

23 11/01/12 143.65 463 25 139 61 199 23

24 07/01/14 152.45 353 25 162 70 200 3

25 06/01/10 176.74 302 42 174 139 200 155

26 04/01/11 151.67 329 12 165 110 202 184

27 07/01/10 186.71 360 8 181.5 127 209 0

28 07/01/12 147.86 368 29 158.5 110 210 56

29 08/01/12 148.01 352 12 157 72 220 121

30 02/01/12 140.87 420 17 153.5 76 223 6

31 03/01/15 148.01 368 8 160 55 226 49

32 04/01/10 141.20 426 21 144 80 227 2

33 06/01/11 170.52 473 25 172 95 227 9

34 12/01/14 129.97 463 17 92 57 230 28

35 09/01/11 155.41 424 12 154 102 231 1

36 04/01/12 149.31 362 17 156 91 238 1

37 03/01/14 166.11 477 13 166 63 240 2

38 12/01/12 165.45 420 23 164 55 241 162

39 03/01/12 155.68 438 12 162 105 242 4

40 11/01/11 171.56 436 12 167 154 243 5

41 08/01/11 170.58 391 8 174 124 243 174

42 11/01/13 144.41 430 8 145.5 53 245 2

43 03/01/10 161.40 687 21 158 139 245 35

44 12/01/13 156.66 487 21 144 63 251 20

45 02/01/15 151.83 438 17 157 63 253 6

46 09/01/10 186.70 470 4 177.5 84 254 252

47 03/01/13 182.51 527 13 176 36 254 127

48 07/01/11 174.58 427 29 167 112 256 3

49 09/01/13 155.66 348 25 164 89 257 3

50 08/01/10 164.30 407 17 165 124 257 68

51 01/01/15 162.45 545 21 166.5 70 261 6

52 02/01/10 159.71 817 25 162 72 268 1

53 01/01/14 175.87 613 25 168 61 269 3

54 03/01/11 113.22 444 12 78 63 275 119

55 10/01/12 150.13 464 8 151 60 276 5

56 12/01/10 152.40 576 25 117 76 283 0

57 02/01/13 174.64 521 16 162 79 295 20

58 11/01/15 184.19 609 21 167 76 295 0

59 12/01/11 165.79 514 29 158 61 298 1

60 01/01/10 150.42 490 38 134 84 306 91

61 10/01/13 166.81 438 21 158 124 319 6

62 10/01/11 198.26 541 12 179 93 319 128

63 10/01/15 125.00 405 4 97 38 326 8

64 10/01/10 176.27 522 8 160 53 333 2

65 11/01/14 159.76 514 8 153 46 340 14

66 11/01/10 191.82 545 12 171 117 349 56

67 10/01/14 197.97 481 13 176 53 384 1

68 01/01/13 246.32 755 23 206 79 390 40

69 01/01/12 175.66 826 25 161 76 398 74

70 02/01/14 225.35 598 13 191 59 413 3

71 02/01/11 207.88 562 25 170.5 105 438 0

72 12/01/15 208.86 588 4 183 42 460 10

Rank	Date	Average	High	Low	Median	Lowest High	Highest Low	Missing
1	01/01/11	101.47	336	8	76	70	156	72
2	07/01/15	126.55	201	13	140.5	93	157	2
3	05/01/15	127.01	311	25	137	89	160	4
4	06/01/15	115.51	308	8	117	76	162	18
5	05/01/14	142.27	321	29	156	91	163	2
6	08/01/15	105.87	195	13	99	74	164	1
7	09/01/15	103.12	256	4	87	53	167	3
8	07/01/13	138.27	266	33	153	99	170	7
9	09/01/14	136.51	279	8	155	74	171	20
10	08/01/13	130.34	258	21	147	82	172	9
11	06/01/14	126.68	275	13	137	99	172	18
12	05/01/11	131.47	314	21	142	87	174	32
13	08/01/14	127.60	259	8	149	89	175	11
14	09/01/12	116.61	288	4	119	21	177	8
15	05/01/10	153.73	364	17	161	115	181	7
16	06/01/12	158.80	388	4	166	61	183	12
17	04/01/15	146.94	646	4	157	84	185	9
18	04/01/13	124.37	310	16	133	62	188	2
19	05/01/13	157.67	370	38	160.5	156	188	36
20	06/01/13	177.04	477	33	177	89	192	32
21	04/01/14	164.56	553	17	167	134	193	3
22	05/01/12	157.42	362	21	166	119	196	53
23	11/01/12	143.65	463	25	139	61	199	23
24	07/01/14	152.45	353	25	162	70	200	3
25	06/01/10	176.74	302	42	174	139	200	155
26	04/01/11	151.67	329	12	165	110	202	184
27	07/01/10	186.71	360	8	181.5	127	209	0
28	07/01/12	147.86	368	29	158.5	110	210	56
29	08/01/12	148.01	352	12	157	72	220	121
30	02/01/12	140.87	420	17	153.5	76	223	6
31	03/01/15	148.01	368	8	160	55	226	49
32	04/01/10	141.20	426	21	144	80	227	2
33	06/01/11	170.52	473	25	172	95	227	9
34	12/01/14	129.97	463	17	92	57	230	28
35	09/01/11	155.41	424	12	154	102	231	1
36	04/01/12	149.31	362	17	156	91	238	1
37	03/01/14	166.11	477	13	166	63	240	2
38	12/01/12	165.45	420	23	164	55	241	162
39	03/01/12	155.68	438	12	162	105	242	4
40	11/01/11	171.56	436	12	167	154	243	5
41	08/01/11	170.58	391	8	174	124	243	174
42	11/01/13	144.41	430	8	145.5	53	245	2
43	03/01/10	161.40	687	21	158	139	245	35
44	12/01/13	156.66	487	21	144	63	251	20
45	02/01/15	151.83	438	17	157	63	253	6
46	09/01/10	186.70	470	4	177.5	84	254	252
47	03/01/13	182.51	527	13	176	36	254	127
48	07/01/11	174.58	427	29	167	112	256	3
49	09/01/13	155.66	348	25	164	89	257	3
50	08/01/10	164.30	407	17	165	124	257	68
51	01/01/15	162.45	545	21	166.5	70	261	6
52	02/01/10	159.71	817	25	162	72	268	1
53	01/01/14	175.87	613	25	168	61	269	3
54	03/01/11	113.22	444	12	78	63	275	119
55	10/01/12	150.13	464	8	151	60	276	5
56	12/01/10	152.40	576	25	117	76	283	0
57	02/01/13	174.64	521	16	162	79	295	20
58	11/01/15	184.19	609	21	167	76	295	0
59	12/01/11	165.79	514	29	158	61	298	1
60	01/01/10	150.42	490	38	134	84	306	91
61	10/01/13	166.81	438	21	158	124	319	6
62	10/01/11	198.26	541	12	179	93	319	128
63	10/01/15	125.00	405	4	97	38	326	8
64	10/01/10	176.27	522	8	160	53	333	2
65	11/01/14	159.76	514	8	153	46	340	14
66	11/01/10	191.82	545	12	171	117	349	56
67	10/01/14	197.97	481	13	176	53	384	1
68	01/01/13	246.32	755	23	206	79	390	40
69	01/01/12	175.66	826	25	161	76	398	74
70	02/01/14	225.35	598	13	191	59	413	3
71	02/01/11	207.88	562	25	170.5	105	438	0
72	12/01/15	208.86	588	4	183	42	460	10