This is cutadapt 2.8 with Python 3.7.4 Command line parameters: -a C{9} -m 20 -o TP8.trim.fastq TP8.fastq Processing reads on 1 core in single-end mode ... Finished in 2.30 s (14 us/read; 4.28 M reads/minute). === Summary === Total reads processed: 163,873 Reads with adapters: 24,598 (15.0%) Reads that were too short: 1,959 (1.2%) Reads written (passing filters): 161,914 (98.8%) Total basepairs processed: 9,996,253 bp Total written (filtered): 9,512,202 bp (95.2%) === Adapter 1 === Sequence: CCCCCCCCC; Type: regular 3'; Length: 9; Trimmed: 24598 times; Reverse-complemented: 0 times No. of allowed errors: 0-9 bp: 0 Bases preceding removed adapters: A: 46.5% C: 0.0% G: 17.6% T: 35.8% none/other: 0.1% Overview of removed sequences length count expect max.err error counts 3 2745 2560.5 0 2745 4 1488 640.1 0 1488 5 1157 160.0 0 1157 6 997 40.0 0 997 7 858 10.0 0 858 8 741 2.5 0 741 9 630 0.6 0 630 10 632 0.6 0 632 11 625 0.6 0 625 12 592 0.6 0 592 13 589 0.6 0 589 14 623 0.6 0 623 15 555 0.6 0 555 16 504 0.6 0 504 17 513 0.6 0 513 18 517 0.6 0 517 19 579 0.6 0 579 20 514 0.6 0 514 21 508 0.6 0 508 22 485 0.6 0 485 23 478 0.6 0 478 24 479 0.6 0 479 25 468 0.6 0 468 26 474 0.6 0 474 27 466 0.6 0 466 28 447 0.6 0 447 29 411 0.6 0 411 30 416 0.6 0 416 31 376 0.6 0 376 32 373 0.6 0 373 33 339 0.6 0 339 34 324 0.6 0 324 35 313 0.6 0 313 36 274 0.6 0 274 37 286 0.6 0 286 38 223 0.6 0 223 39 210 0.6 0 210 40 220 0.6 0 220 41 210 0.6 0 210 42 218 0.6 0 218 43 189 0.6 0 189 44 184 0.6 0 184 45 191 0.6 0 191 46 172 0.6 0 172 47 170 0.6 0 170 48 168 0.6 0 168 49 150 0.6 0 150 50 114 0.6 0 114 51 83 0.6 0 83 52 71 0.6 0 71 53 41 0.6 0 41 54 72 0.6 0 72 55 37 0.6 0 37 56 30 0.6 0 30 57 17 0.6 0 17 58 14 0.6 0 14 59 9 0.6 0 9 60 15 0.6 0 15 61 14 0.6 0 14