Madrid-Ciudad Universitaria — March 2023

4,367 London Plane — day 29

2,331 London Plane — day 31

1,885 London Plane — day 30

30 Days measured

Daily pollen level evolution
Day	Cypress/Yew	London Plane	Grasses	Plantain	Olive
1	4 (Low)	0 (Low)	0 (Low)	0 (Low)	0 (Low)
2	8 (Low)	0 (Low)	1 (Low)	0 (Low)	0 (Low)
3	16 (Low)	0 (Low)	1 (Low)	0 (Low)	0 (Low)
4	29 (Low)	0 (Low)	4 (Low)	0 (Low)	0 (Low)
5	106 (High)	0 (Low)	1 (Low)	0 (Low)	0 (Low)
6	32 (Medium)	0 (Low)	1 (Low)	0 (Low)	0 (Low)
7	401 (Very high)	0 (Low)	0 (Low)	0 (Low)	0 (Low)
8	184 (High)	0 (Low)	1 (Low)	0 (Low)	0 (Low)
9	35 (Medium)	0 (Low)	0 (Low)	0 (Low)	0 (Low)
10	130 (High)	0 (Low)	1 (Low)	0 (Low)	0 (Low)
11	102 (High)	0 (Low)	7 (Low)	0 (Low)	0 (Low)
12	209 (Very high)	0 (Low)	3 (Low)	0 (Low)	0 (Low)
13	180 (High)	0 (Low)	2 (Low)	1 (Low)	0 (Low)
14	129 (High)	0 (Low)	4 (Low)	0 (Low)	0 (Low)
15	51 (Medium)	0 (Low)	2 (Low)	0 (Low)	0 (Low)
16	168 (High)	3 (Low)	3 (Low)	1 (Low)	0 (Low)
17	122 (High)	10 (Low)	7 (Low)	0 (Low)	0 (Low)
18	6 (Low)	1 (Low)	2 (Low)	0 (Low)	0 (Low)
19	15 (Low)	11 (Low)	3 (Low)	0 (Low)	0 (Low)
20	98 (High)	32 (Medium)	4 (Low)	1 (Low)	0 (Low)
21	27 (Low)	55 (Medium)	8 (Low)	0 (Low)	0 (Low)
22	26 (Low)	177 (High)	2 (Low)	0 (Low)	0 (Low)
23	12 (Low)	163 (High)	4 (Low)	2 (Low)	0 (Low)
24	5 (Low)	89 (Medium)	4 (Low)	1 (Low)	0 (Low)
25	16 (Low)	279 (High)	1 (Low)	0 (Low)	0 (Low)
26	9 (Low)	786 (Very high)	6 (Low)	1 (Low)	0 (Low)
27	—	—	—	—	—
28	18 (Low)	1,718 (Very high)	1 (Low)	0 (Low)	0 (Low)
29	10 (Low)	4,367 (Very high)	0 (Low)	1 (Low)	0 (Low)
30	5 (Low)	1,885 (Very high)	1 (Low)	2 (Low)	0 (Low)
31	7 (Low)	2,331 (Very high)	1 (Low)	2 (Low)	0 (Low)