| ps4091 d:\northps\block123-14dec07\ps4091.txt 26 Dec 07 12:31:17 Wednesday elapsed time 00:14:41 3705714 unique returns and 0 duplicate returns | Rectangular area = 0.877 km2 Data area = 0.875 km2 *percent double coverage = 99.926 **low-curvature dc area = 0.002 km2 | details return classification P1 = 23.1 cm, P2 = 23.7 cm | 
| 1st-return consistency 1st-return RMSE, low-curvature areas = 0.528 95p = 0.095, 98p = 0.095, 99.5p = 0.965  consistency legend | Ground-return consistency BE RMSE = 2.430 95p = 5.065, 98p = 7.240, 99.5p = 11.054   | 1st-return density  ground-return density  density legend ratio ground returns to 1st returns  ratio legend |