Table 2.
Maximum daily Ambrosia pollen concentrations (grains/m3), day of maximum daily pollen concentrations (day from 1 January) and number of days with concentrations above 20 pollen grains/m3 recorded in Rzeszów, Kraków and Poznań during 1997–2009. CV Coefficient of variation
| Year | Maximum daily pollen concentrations (grains/m3) | Day of maximum daily average Ambrosia pollen concentration (day from 1 January) | Number of days > 20 Ambrosia pollen grains/m3 daily average | ||||||
|---|---|---|---|---|---|---|---|---|---|
| Rzeszów | Kraków | Poznań | Rzeszów | Kraków | Poznań | Rzeszów | Kraków | Poznań | |
| 1997 | 34 | 6 | 44 | 235 | 237 | 238 | 2 | 0 | 3 |
| 1998 | 125 | 47 | 12 | 253 | 255 | 249 | 4 | 1 | 0 |
| 1999 | 319 | 85 | 109 | 247 | 246 | 248 | 6 | 5 | 4 |
| 2000 | 86 | 14 | 12 | 234 | 232 | 241 | 7 | 0 | 0 |
| 2001 | 98 | 34 | 41 | 247 | 229 | 243 | 2 | 1 | 1 |
| 2002 | 98 | 39 | 92 | 248 | 247 | 240 | 6 | 1 | 4 |
| 2003 | 55 | 23 | 9 | 255 | 241 | 241 | 5 | 1 | 0 |
| 2004 | 42 | 31 | 6 | 243 | 243 | 255 | 3 | 1 | 0 |
| 2005 | 59 | 29 | 53 | 253 | 237 | 250 | 5 | 1 | 3 |
| 2006 | 64 | 14 | 51 | 237 | 268 | 257 | 3 | 0 | 4 |
| 2007 | 21 | 48 | 234 | 234 | 1 | 1 | |||
| 2008 | 70 | 22 | 249 | 245 | 7 | 1 | |||
| 2009 | 98 | 50 | 16 | 246 | 253 | 253 | 4 | 3 | 0 |
| Mean | 98.0 | 35.6 | 39.6 | 245.3 | 243.9 | 245.7 | 4.3 | 1.7 | 1.6 |
| SD | 78.4 | 22.8 | 32.2 | 7.3 | 10.8 | 7.0 | 1.7 | 2.1 | 1.7 |
| CV(%) | 80.0 | 63.9 | 81.2 | 3.0 | 4.4 | 2.8 | 39.3 | 123.9 | 105.8 |