| 2005-09-13 | Becoming yellow (50%) | Rowan | | Nikel school N 2, Nikel (Russia) |
| 2003-07-10 | Ripening | Cloudberry | | Nikel school N 2, Nikel (Russia) |
| 2002-09-24 | Start falling leaves | Rowan | | Nikel school N 2, Nikel (Russia) |
| 2005-09-22 | Start falling leaves | Downy Birch | | Nikel school N 2, Nikel (Russia) |
| 2005-07-21 | Flowering | Rosebay Willowherb | | Nikel school N 2, Nikel (Russia) |
| 2005-07-10 | Flowering | Dwarf Cornel | | Nikel school N 2, Nikel (Russia) |
| 2005-06-27 | Flowering | Cowberry | | Nikel school N 2, Nikel (Russia) |
| 2005-06-12 | Flowering | Bilberry | | Nikel school N 2, Nikel (Russia) |
| 2005-06-10 | Flowering | Cloudberry | | Nikel school N 2, Nikel (Russia) |
| 2005-08-16 | Ripening | Rowan | | Nikel school N 2, Nikel (Russia) |
| 2005-08-08 | Becoming yellow (50%) | Downy Birch | | Nikel school N 2, Nikel (Russia) |
| 2003-08-25 | Spreading of seeds | Rosebay Willowherb | | Nikel school N 2, Nikel (Russia) |
| 2003-08-02 | Ripening | Dwarf Cornel | | Nikel school N 2, Nikel (Russia) |
| 2005-08-27 | Ripening | Cowberry | | Nikel school N 2, Nikel (Russia) |
| 2003-08-05 | Ripening | Bilberry | | Nikel school N 2, Nikel (Russia) |
| 2005-06-11 | Flowering | Bilberry | | Nikel school N 2, Nikel (Russia) |
| 2005-06-16 | Flowering | Cloudberry | | Nikel school N 2, Nikel (Russia) |
| 2005-06-18 | Flowering | Labrador-tea | | Nikel school N 2, Nikel (Russia) |
| 2005-05-15 | First bite | Mosquito | | Nikel school N 2, Nikel (Russia) |
| 2005-05-19 | Leaves unrolling | Downy Birch | | Nikel school N 2, Nikel (Russia) |
| 2000-05-21 | First green leaves | Rowan | | Nikel school N 2, Nikel (Russia) |
| 2005-06-01 | First observation | Bumble-bee | | Nikel school N 2, Nikel (Russia) |
| 2005-05-10 | First ants on the hill | Ant | | Nikel school N 2, Nikel (Russia) |
| 2005-05-15 | First observation | Arctic Tern | | Nikel school N 2, Nikel (Russia) |
| 2005-05-20 | First observation | Willow Warbler | | Nikel school N 2, Nikel (Russia) |
| 2005-05-25 | First observation | Bluethroat | | Nikel school N 2, Nikel (Russia) |
| 2004-09-24 | Start falling leaves | Rowan | | Nikel school N 2, Nikel (Russia) |
| 2004-09-09 | Becoming yellow (50%) | Rowan | | Nikel school N 2, Nikel (Russia) |
| 2004-08-19 | Ripening | Rowan | | Nikel school N 2, Nikel (Russia) |
| 2004-09-08 | Start falling leaves | Downy Birch | | Nikel school N 2, Nikel (Russia) |
| 2004-07-17 | Flowering | Rosebay Willowherb | | Nikel school N 2, Nikel (Russia) |
| 2004-07-08 | Flowering | Dwarf Cornel | | Nikel school N 2, Nikel (Russia) |
| 2004-06-25 | Flowering | Cowberry | | Nikel school N 2, Nikel (Russia) |
| 2004-06-09 | Flowering | Bilberry | | Nikel school N 2, Nikel (Russia) |
| 2004-06-13 | Flowering | Cloudberry | | Nikel school N 2, Nikel (Russia) |
| 2004-06-25 | Flowering | Globe flower | | Nikel school N 2, Nikel (Russia) |
| 2004-06-22 | Flowering | Labrador-tea | | Nikel school N 2, Nikel (Russia) |
| 2004-06-23 | Flowering | Rowan | | Nikel school N 2, Nikel (Russia) |
| 2004-05-24 | Leaves unrolling | Downy Birch | | Nikel school N 2, Nikel (Russia) |
| 2004-08-18 | Spreading of seeds | Rosebay Willowherb | | Nikel school N 2, Nikel (Russia) |
| 2004-08-07 | Ripening | Dwarf Cornel | | Nikel school N 2, Nikel (Russia) |
| 2004-04-23 | First bite | Mosquito | | Nikel school N 2, Nikel (Russia) |
| 2004-04-27 | First observation | Bumble-bee | | Nikel school N 2, Nikel (Russia) |
| 2004-05-08 | First ants on the hill | Ant | | Nikel school N 2, Nikel (Russia) |
| 2004-08-19 | Ripening | Cowberry | | Nikel school N 2, Nikel (Russia) |
| 2004-07-31 | Ripening | Bilberry | | Nikel school N 2, Nikel (Russia) |
| 2004-08-10 | Becoming yellow (50%) | Downy Birch | | Nikel school N 2, Nikel (Russia) |
| 2004-07-20 | Ripening | Cloudberry | | Nikel school N 2, Nikel (Russia) |