% Echo Location Surface Spectrum in units of mm/sqrt(Hz) % 128 Frequency Bands are 0.00781250 Hz wide 408 201 118 114 126 110 125 179 123 157 174 149 248 356 315 252 297 376 252 161 270 312 316 390 290 332 228 162 125 195 153 253 151 139 104 85 126 56 93 95 91 66 74 93 80 46 39 56 47 54 55 61 65 44 43 71 44 49 53 46 51 29 37 67 67 50 25 23 72 40 29 24 36 18 44 36 30 53 -13 42 25 28 -7 32 22 34 37 4 39 0 21 31 32 -9 31 9 -23 42 29 27 -7 -19 27 -5 7 16 4 22 -22 -17 -25 11 -7 22 14 22 28 16 13 -12 -22 -16 -20 -12 -13 -30 -28 21