Madrid-Arganzuela — April 1997

595 Oak — day 27

478 Oak — day 17

467 Unidentified — day 16

30 Days measured

Daily pollen level evolution
Day	Cypress/Yew	London Plane	Grasses	Plantain	Olive	Birch	Privet	Alder	Chestnut	Composites	Heather	Eucalyptus	Mulberry	Elm	Pine	Poplar	Goosefoot/Amaranth	Oak	Sorrel	Willow	Nettle	Unidentified
1	8 (Low)	51 (Medium)	5 (Low)	3 (Low)	2 (Low)	3 (Low)	0 (Low)	0 (Low)	1 (Low)	1 (Low)	0 (Low)	0 (Low)	7 (Low)	0 (Low)	17 (Medium)	0 (Low)	1 (Low)	173 (Very high)	1 (Low)	1 (Low)	15 (Medium)	20
2	17 (Low)	45 (Medium)	8 (Low)	7 (Low)	0 (Low)	2 (Low)	0 (Low)	0 (Low)	3 (Low)	0 (Low)	0 (Low)	0 (Low)	7 (Low)	0 (Low)	9 (Low)	0 (Low)	1 (Low)	80 (High)	1 (Low)	3 (Low)	21 (Medium)	13
3	24 (Low)	56 (Medium)	12 (Low)	19 (Low)	0 (Low)	7 (Low)	0 (Low)	0 (Low)	5 (Low)	0 (Low)	1 (Low)	0 (Low)	9 (Low)	0 (Low)	14 (Low)	0 (Low)	1 (Low)	241 (Very high)	1 (Low)	2 (Low)	22 (Medium)	35
4	26 (Low)	58 (Medium)	20 (Low)	11 (Low)	0 (Low)	5 (Low)	0 (Low)	0 (Low)	4 (Low)	0 (Low)	1 (Low)	0 (Low)	9 (Low)	1 (Low)	16 (Medium)	0 (Low)	0 (Low)	84 (High)	3 (Low)	4 (Low)	8 (Low)	33
5	15 (Low)	24 (Low)	5 (Low)	5 (Low)	2 (Low)	0 (Low)	0 (Low)	0 (Low)	1 (Low)	1 (Low)	0 (Low)	0 (Low)	2 (Low)	0 (Low)	8 (Low)	0 (Low)	1 (Low)	90 (High)	1 (Low)	1 (Low)	5 (Low)	22
6	0 (Low)	0 (Low)	0 (Low)	0 (Low)	0 (Low)	0 (Low)	0 (Low)	0 (Low)	0 (Low)	0 (Low)	0 (Low)	0 (Low)	0 (Low)	0 (Low)	0 (Low)	0 (Low)	0 (Low)	0 (Low)	0 (Low)	0 (Low)	0 (Low)	0
7	0 (Low)	0 (Low)	0 (Low)	0 (Low)	0 (Low)	0 (Low)	0 (Low)	0 (Low)	0 (Low)	0 (Low)	0 (Low)	0 (Low)	0 (Low)	0 (Low)	0 (Low)	0 (Low)	0 (Low)	0 (Low)	0 (Low)	0 (Low)	0 (Low)	0
8	7 (Low)	7 (Low)	4 (Low)	0 (Low)	0 (Low)	0 (Low)	0 (Low)	1 (Low)	0 (Low)	0 (Low)	0 (Low)	0 (Low)	1 (Low)	0 (Low)	7 (Low)	0 (Low)	0 (Low)	22 (Medium)	0 (Low)	1 (Low)	4 (Low)	10
9	13 (Low)	10 (Low)	13 (Low)	1 (Low)	0 (Low)	1 (Low)	0 (Low)	0 (Low)	0 (Low)	0 (Low)	0 (Low)	0 (Low)	0 (Low)	3 (Low)	6 (Low)	0 (Low)	2 (Low)	27 (Medium)	0 (Low)	0 (Low)	5 (Low)	25
10	1 (Low)	3 (Low)	5 (Low)	2 (Low)	1 (Low)	1 (Low)	0 (Low)	0 (Low)	0 (Low)	0 (Low)	0 (Low)	0 (Low)	1 (Low)	0 (Low)	2 (Low)	0 (Low)	0 (Low)	43 (Medium)	0 (Low)	0 (Low)	5 (Low)	20
11	4 (Low)	5 (Low)	2 (Low)	1 (Low)	0 (Low)	0 (Low)	0 (Low)	0 (Low)	0 (Low)	0 (Low)	0 (Low)	0 (Low)	0 (Low)	0 (Low)	3 (Low)	0 (Low)	0 (Low)	18 (Medium)	0 (Low)	1 (Low)	4 (Low)	5
12	24 (Low)	8 (Low)	5 (Low)	15 (Low)	3 (Low)	1 (Low)	0 (Low)	0 (Low)	0 (Low)	1 (Low)	0 (Low)	0 (Low)	1 (Low)	0 (Low)	11 (Low)	1 (Low)	0 (Low)	88 (High)	0 (Low)	0 (Low)	1 (Low)	27
13	26 (Low)	6 (Low)	6 (Low)	11 (Low)	3 (Low)	1 (Low)	0 (Low)	0 (Low)	2 (Low)	0 (Low)	0 (Low)	0 (Low)	1 (Low)	0 (Low)	17 (Medium)	0 (Low)	0 (Low)	87 (High)	1 (Low)	1 (Low)	3 (Low)	24
14	14 (Low)	5 (Low)	7 (Low)	6 (Low)	5 (Low)	0 (Low)	0 (Low)	0 (Low)	0 (Low)	0 (Low)	0 (Low)	0 (Low)	0 (Low)	0 (Low)	5 (Low)	0 (Low)	1 (Low)	104 (Very high)	0 (Low)	0 (Low)	8 (Low)	28
15	15 (Low)	1 (Low)	8 (Low)	7 (Low)	5 (Low)	1 (Low)	0 (Low)	1 (Low)	0 (Low)	1 (Low)	0 (Low)	0 (Low)	0 (Low)	0 (Low)	5 (Low)	0 (Low)	4 (Low)	169 (Very high)	0 (Low)	0 (Low)	5 (Low)	35
16	46 (Medium)	26 (Low)	63 (Medium)	18 (Low)	26 (Low)	6 (Low)	0 (Low)	0 (Low)	1 (Low)	3 (Low)	0 (Low)	0 (Low)	3 (Low)	1 (Low)	28 (Medium)	0 (Low)	1 (Low)	404 (Very high)	3 (Low)	1 (Low)	8 (Low)	467
17	32 (Medium)	29 (Low)	26 (Low)	7 (Low)	30 (Low)	3 (Low)	0 (Low)	1 (Low)	0 (Low)	1 (Low)	0 (Low)	0 (Low)	1 (Low)	0 (Low)	11 (Low)	1 (Low)	2 (Low)	478 (Very high)	0 (Low)	0 (Low)	3 (Low)	191
18	9 (Low)	5 (Low)	2 (Low)	12 (Low)	13 (Low)	1 (Low)	1 (Low)	0 (Low)	0 (Low)	1 (Low)	0 (Low)	0 (Low)	1 (Low)	0 (Low)	15 (Medium)	0 (Low)	0 (Low)	88 (High)	1 (Low)	2 (Low)	1 (Low)	20
19	1 (Low)	0 (Low)	1 (Low)	3 (Low)	4 (Low)	0 (Low)	0 (Low)	0 (Low)	0 (Low)	0 (Low)	0 (Low)	0 (Low)	0 (Low)	0 (Low)	0 (Low)	0 (Low)	0 (Low)	19 (Medium)	1 (Low)	0 (Low)	1 (Low)	4
20	1 (Low)	1 (Low)	0 (Low)	0 (Low)	0 (Low)	0 (Low)	0 (Low)	0 (Low)	0 (Low)	0 (Low)	0 (Low)	0 (Low)	0 (Low)	0 (Low)	0 (Low)	0 (Low)	0 (Low)	11 (Low)	0 (Low)	0 (Low)	0 (Low)	2
21	12 (Low)	2 (Low)	9 (Low)	18 (Low)	4 (Low)	3 (Low)	0 (Low)	0 (Low)	0 (Low)	2 (Low)	1 (Low)	0 (Low)	0 (Low)	0 (Low)	40 (Medium)	0 (Low)	0 (Low)	135 (Very high)	1 (Low)	0 (Low)	2 (Low)	6
22	5 (Low)	0 (Low)	3 (Low)	20 (Medium)	1 (Low)	1 (Low)	0 (Low)	0 (Low)	0 (Low)	0 (Low)	6 (Low)	1 (Low)	1 (Low)	0 (Low)	30 (Medium)	0 (Low)	0 (Low)	166 (Very high)	2 (Low)	1 (Low)	1 (Low)	6
23	15 (Low)	2 (Low)	12 (Low)	14 (Low)	25 (Low)	1 (Low)	0 (Low)	0 (Low)	0 (Low)	1 (Low)	16 (Medium)	0 (Low)	0 (Low)	0 (Low)	36 (Medium)	0 (Low)	0 (Low)	212 (Very high)	1 (Low)	0 (Low)	1 (Low)	24
24	4 (Low)	0 (Low)	24 (Low)	24 (Medium)	243 (High)	2 (Low)	0 (Low)	0 (Low)	0 (Low)	1 (Low)	3 (Low)	0 (Low)	1 (Low)	0 (Low)	15 (Medium)	0 (Low)	0 (Low)	205 (Very high)	6 (Low)	1 (Low)	5 (Low)	36
25	1 (Low)	0 (Low)	11 (Low)	12 (Low)	58 (Medium)	0 (Low)	0 (Low)	0 (Low)	0 (Low)	1 (Low)	1 (Low)	0 (Low)	0 (Low)	0 (Low)	2 (Low)	0 (Low)	0 (Low)	46 (Medium)	1 (Low)	0 (Low)	1 (Low)	14
26	1 (Low)	2 (Low)	11 (Low)	6 (Low)	65 (Medium)	1 (Low)	0 (Low)	0 (Low)	0 (Low)	0 (Low)	3 (Low)	0 (Low)	0 (Low)	0 (Low)	27 (Medium)	0 (Low)	0 (Low)	150 (Very high)	3 (Low)	0 (Low)	1 (Low)	32
27	9 (Low)	7 (Low)	14 (Low)	16 (Low)	37 (Low)	1 (Low)	0 (Low)	0 (Low)	0 (Low)	1 (Low)	3 (Low)	1 (Low)	1 (Low)	0 (Low)	93 (High)	0 (Low)	1 (Low)	595 (Very high)	7 (Low)	0 (Low)	3 (Low)	77
28	5 (Low)	0 (Low)	14 (Low)	26 (Medium)	11 (Low)	3 (Low)	0 (Low)	1 (Low)	0 (Low)	0 (Low)	5 (Low)	1 (Low)	1 (Low)	0 (Low)	31 (Medium)	0 (Low)	0 (Low)	148 (Very high)	1 (Low)	0 (Low)	2 (Low)	30
29	68 (Medium)	1 (Low)	7 (Low)	20 (Medium)	8 (Low)	2 (Low)	0 (Low)	0 (Low)	0 (Low)	0 (Low)	6 (Low)	1 (Low)	0 (Low)	0 (Low)	47 (Medium)	0 (Low)	0 (Low)	196 (Very high)	5 (Low)	0 (Low)	2 (Low)	36
30	39 (Medium)	1 (Low)	6 (Low)	18 (Low)	8 (Low)	1 (Low)	0 (Low)	0 (Low)	0 (Low)	0 (Low)	14 (Low)	0 (Low)	1 (Low)	0 (Low)	25 (Medium)	0 (Low)	0 (Low)	102 (Very high)	1 (Low)	0 (Low)	1 (Low)	26