Table I. Descriptive statistics.
Interval | Data Type | Mean | Min. | Max. | Std. Dev | CV % | Stability | |
---|---|---|---|---|---|---|---|---|
Mother-reared | Daily | Activity Count * | 85.42 | 71.08 | 100.57 | 10.55 | 0.12 | 0.88 |
Lights-on | Sleep time (min) * | 226.34 | 165.88 | 301.00 | 49.96 | 0.22 | 0.78 | |
Daily | Sleep time (min) | 929.94 | 853.22 | 1101.50 | 88.06 | 0.09 | 0.91 | |
Evening lights-on | Sleep time (min) | 144.75 | 104.78 | 213.91 | 38.06 | 0.26 | 0.74 | |
Morning lights-on | Sleep time (min) * | 82.72 | 50.31 | 124.09 | 25.77 | 0.31 | 0.69 | |
Lights-off | Sleep time (min) | 684.18 | 656.72 | 700.66 | 15.17 | 0.02 | 0.98 | |
Sleep | Sleep time (min) * | 608.98 | 530.72 | 671.31 | 49.39 | 0.08 | 0.92 | |
Sleep | Sleep efficiency | 97.50 | 95.32 | 99.16 | 1.42 | 0.01 | 0.99 | |
Sleep | Early Wake (min) * | 64.38 | 8.34 | 127.31 | 41.08 | 0.64 | 0.36 | |
Nursery-reared | Daily | Activity Count * | 85.98 | 69.58 | 98.57 | 10.65 | 0.12 | 0.88 |
Lights-on | Sleep time (min) * | 277.08 | 218.06 | 356.84 | 48.43 | 0.17 | 0.83 | |
Daily | Sleep time (min) | 960.10 | 895.72 | 1047.75 | 53.56 | 0.06 | 0.94 | |
Evening lights-on | Sleep time (min) | 154.04 | 115.44 | 186.19 | 25.15 | 0.16 | 0.84 | |
Morning lights-on | Sleep time (min) * | 123.05 | 85.44 | 179.56 | 34.24 | 0.28 | 0.72 | |
Lights-off | Sleep time (min) | 677.94 | 661.84 | 693.53 | 10.28 | 0.02 | 0.98 | |
Sleep | Sleep time (min) * | 580.13 | 510.78 | 639.13 | 46.44 | 0.08 | 0.92 | |
Sleep | Sleep efficiency | 97.30 | 95.66 | 98.53 | 0.94 | 0.01 | 0.99 | |
Sleep | Early Wake (min) * | 85.51 | 30.31 | 157.78 | 44.35 | 0.52 | 0.48 |