% Echo Location Surface Spectrum in units of mm/sqrt(Hz) % 128 Frequency Bands are 0.00781250 Hz wide 124 177 219 121 204 72 95 63 126 127 173 248 686 856 1187 836 610 521 673 412 547 375 267 503 304 348 422 316 307 294 199 120 138 157 99 91 129 99 89 90 41 55 62 68 33 44 48 35 46 23 35 15 41 36 34 26 42 33 -16 -30 9 14 41 -17 -16 10 16 17 -24 -24 -19 -25 -10 -18 5 20 -27 -28 11 -18 -23 -21 -25 -27 -23 -22 7 -21 5 -14 3 -15 -13 -25 -32 -17 -17 -30 5 -3 -24 -28 -24 -20 -26 34 6 -12 11 15 16 -3 16 -22 -11 6 -10 -11 -2 16 22 23 -3 -15 6 38 34 6