# Effort Normalized Relative Frequency of Echinoidea
# Data Use Policy: http://dsg.mbari.org/dsg/datause
Depth [meters]	Effort Normalized Relative Frequency
25.0	0.000638026017
75.0	0.000831411038
125.0	0.000412419417
175.0	0.005675296806
225.0	0.019348453295
275.0	0.013500373438
325.0	0.030419499856
375.0	0.055309394849
425.0	0.029880031012
475.0	0.007995404854
525.0	0.008862817962
575.0	0.038362738919
625.0	0.020679126101
675.0	0.011160700543
725.0	0.003409803509
775.0	0.00585154513
825.0	0.002571934056
875.0	0.001932670082
925.0	0.001678249279
975.0	0.003279758755
1025.0	0.004436141724
1075.0	0.005409372966
1125.0	0.006472902139
1175.0	0.006102520597
1225.0	0.003988846554
1275.0	0.002528289614
1325.0	0.003511256956
1375.0	0.006307468671
1425.0	0.002051537852
1475.0	0.001891120785
1525.0	0.004009345439
1575.0	0.000953341924
1625.0	0.000094218648
1675.0	0.000575190163
1725.0	0.001771447751
1775.0	0.001039947427
1825.0	0.000220898236
1875.0	0.001331470917
1925.0	0.000710759784
1975.0	0.000542583919
2025.0	0.000872584733
2075.0	0.001742931485
2125.0	0.001003714351
2175.0	0.000852213405
2225.0	0.001599126178
2275.0	0.0016098739
2325.0	0.002036789898
2375.0	0.001789568476
2425.0	0.001640182602
2475.0	0.001351918995
2525.0	0.001659725332
2575.0	0.004174542053
2625.0	0.001090234348
2675.0	0.003440333602
2725.0	0.000690253161
2775.0	0.001463046774
2825.0	0.107191186549
2875.0	0.006100698228
2925.0	0.002299160741
2975.0	0.003408008486
3025.0	0.006981850065
3075.0	0.0050013061
3125.0	0.008198058956
3175.0	0.018583409868
3225.0	0.005407947694
3275.0	0.035199715474
3325.0	0.0040496329
3375.0	0.003150537317
3425.0	0.027630430417
3475.0	0.104663386394
3525.0	0.09195173506
3575.0	0.025059800072
3625.0	0.024321013855
3675.0	0.014084559012
3725.0	0.00366934111
3775.0	0.01696231994
3825.0	0.002993459146
3875.0	0.050438536957
3925.0	0.016163841122
3975.0	0.073724708256