Weekly mean of maximum and minimum temperatures observations from the 14 HOBO Pro temperature sensorsz.
| Sensor number | Sensor name | Sensor position | Date | Maximum | Date | Minimum |
|---|---|---|---|---|---|---|
| 1 | Canopy | 7.5 m (24.8 ft) above mulch on west side of trunk | 7/16–7/23/02 | 26.16 | 1/21–1/28/03 | −11.74 |
| 2 | North | 1.37 m (4.5 ft) above soil facing north | 7/16–7/23/02 | 25.25 | 1/21–1/28/03 | −11.87 |
| 3 | South | 1.37 m (4.5 ft) above soil facing south | 7/30–1/28/03 | 25.54 | 1/21–1/28/03 | −10.28 |
| 4 | East | 1.37 m (4.5 ft) above soil facing east | 7/30–8/06/02 | 25.31 | 1/21–1/28/03 | −11.15 |
| 5 | West | 1.37 m (4.5 ft) above soil facing west | 7/16–7/23/02 | 25.52 | 1/21–1/28/03 | −11.84 |
| 6 | Trunk | 10 cm (4 in) inside the trunk core 1.41 m (4.7 ft) above soil facing east | 7/30–8/06/02 | 22.78 | 1/21–1/28/03 | −10.02 |
| 7 | Root | Placed into root, 30 cm (12 in) under the soil, 20 cm (8 in) from trunk, into root tissue core, 1.25 cm (0.5 in); root spreads from southwest side of trunk | 7/30–8/06/02 | 21.95 | 2/11–2/18/03 | -0.87 |
| 8 | Soil 30 cm (12 in) | 30 cm (12 in) below the soil near the root sensor | 7/30–8/06/02 | 12.06 | 2/11–2/18/03 | -1.14 |
| 9 | Sod | 5 cm (2 in) under grass | 7/30–8/06/02 | 24.48 | 1/21–1/28/03 | -3.14 |
| 10 | Soil surface | Soil surface 15 cm (6 in) under the mulch | 7/30–8/06/02 | 23.87 | 1/21–1/28/03 | -3.67 |
| 11 | Snow | Placed on south side of trunk, at trunk flair; ≈2.5 cm (≈1 in) above mulch | 7/16–7/23/02 | y | 12/10–12/17/03 | −17.39 |
| 12 | Mulch | 7.5 cm (3 in) into the mulch | 7/30–8/06/02 | 25.45 | 1/21–1/28/03 | -7.02 |
| 13 | Ground | Approximately 180 cm (72 in) from trunk, to the west, 45 cm (18 in) above the sod on stake in grass area outside of canopy (grass kept trimmed) | 7/16–7/23/02 | 25.76 | 1/21–1/28/03 | −12.34 |
| 14 | Base | 15 cm (6 in) above the mulch on west side of tree | 7/30–8/06/02 | 25.62 | 1/21–1/28/03 | −12.06 |