How to extract sequence lines from FASTQ file?

I have FASTQ formatted Illumina sequence file like this: @ERR009148.2485 IL26_1382:7:1:224:616 length=36 ATCACATGCTCCTTGTTCTGCAGCTTGGTGCGGATG +ERR009148.2485 IL26_1382:7:1:224:616 length=36 >>>>>>>>>>>>>>>>>>>>>>5>>->>* @ERR009148.2486 IL26_1382:7:1:914:59 length=36 AAAGAAGTAAAATAAGAAGGCAATGCTTGTGGAAGG +ERR009148.2486 IL26_1382:7:1:914:59 length=36 .>>74::1>174151/7152313,3&003,00&2%2 @ERR009148.2487 IL26_1382:7:1:251:589 length=36 GCCATAAACACCCCAGCACCACATTCATCAGAAGGG +ERR009148.2487 IL26_1382:7:1:251:589 length=36 >>>>>>>>>>>>>>>>>>>>>>8>>>>>>>>7 @ERR009148.2488 IL26_1382:7:1:911:194 length=36 ATTGAGGTGGAGTAGATTAGGCGTAGGTAGAAGTAG +ERR009148.2488 IL26_1382:7:1:911:194 length=36 >>=>>>>>>>=;>7>==<<7;=67=/57/57 I need to extract only the raw sequences from each record. What sed command can be used for that? Expected output: ATCACATGCTCCTTGTTCTGCAGCTTGGTGCGGATG AAAGAAGTAAAATAAGAAGGCAATGCTTGTGGAAGG GCCATAAACACCCCAGCACCACATTCATCAGAAGGG ATTGAGGTGGAGTAGATTAGGCGTAGGTAGAAGTAG