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Table 7
Spectral feature parameters.
| Group | D4000n | Line flux1 | N. of |
| name | range | range | galaxies |
|
|
|||
| G1 | >1.7 | undetected | 3457 |
| G2 | 1.55–1.7 | undetected | 1882 |
| G3 | >1.7 | >3.0 × 10-17 | 1135 |
| G4 | 1.15–1.55 | undetected | 2539 |
| G5 | 1.55–1.7 | >3.0 × 10-17 | 963 |
| G6 | 1.15–1.55 | <1.0 × 10-16 | 6198 |
| G7 | <1.15 | <1.0 × 10-16 | 1123 |
| G8 | 1.15–1.55 | >1.0 × 10-16 | 6681 |
| G9 | <1.15 | >1.0 × 10-16 | 4817 |
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