FastQCFastQC Report
Sun 21 May 2023
EGAF00007848029

Summary

[OK]Basic Statistics

MeasureValue
FilenameEGAF00007848029
File typeConventional base calls
EncodingSanger / Illumina 1.9
Total Sequences70780
Sequences flagged as poor quality0
Sequence length250
%GC51

[OK]Per base sequence quality

Per base quality graph

[WARN]Per tile sequence quality

Per tile quality graph

[OK]Per sequence quality scores

Per Sequence quality graph

[FAIL]Per base sequence content

Per base sequence content

[WARN]Per sequence GC content

Per sequence GC content graph

[OK]Per base N content

N content graph

[OK]Sequence Length Distribution

Sequence length distribution

[FAIL]Sequence Duplication Levels

Duplication level graph

[FAIL]Overrepresented sequences

SequenceCountPercentagePossible Source
ATACCAGGTGTGTGTCAGCAGCCGCGGTAATACGTAGGGTGCGAGCGTTA23183.2749364227182816No Hit
ATACCAGGTGTGTGCCAGCAGCCGCGGTAATACGTAGGGTGCGAGCGTTA13221.8677592540265613No Hit
ATACCAGGTGTGTGTCAGCCGCCGCGGTAATACGTAGGGTGCGAGCGTTA12561.774512574173495No Hit
ATACCAGGTGTGTGTCAGCAGCCGCGGTAATACGGAAGGTCCAGGCGTTA11101.5682396157106526No Hit
ATACCAGGTGTGTGTCAGCAGCCGCGGTAATACGGGGGGTGCGAGCGTTA11021.556936987849675No Hit
ATACCAGGTGTGTGTCAGCAGCCGCGGTAATACGTAGGTGGCAAGCGTTA10101.4269567674484318No Hit
TACACATGACCGGACTACGCGGGTTTCTAATCCTGTTTGCTCCCCACGCT9171.2955637185645663No Hit
TACACATGACCGGACTACGCGGGTTTCTAATCCTGTTTGCTACCCACGCT8811.2447018931901668No Hit
ATACCAGGTGTGTGTCAGCAGCCGCGGTAATACGTAGGTGGCAAGCGTTG8781.2404634077423002No Hit
ATACCAGGTGTGTGTCAGCAGCCGCGGTAATACGGAGGATACGAGCGTTA8741.2348120938118112No Hit
TACACATGACCGGACTACGGGGGTTTCTAATCCTGTTTGCTACCCACGCT8421.1896015823679005No Hit
TACACATGACCGGACTACTGGGGTTTCTAATCCTGTTTGCTACCCACGCT8321.1754732975416784No Hit
TACACATGACCGGACTACGGGGGTTTCTAATCCTGTTTGCTCCCCACGCT8221.1613450127154563No Hit
TACACATGACCGGACTACTGGGGTTTCTAATCCTGTTTGCTCCCCACGCT7741.0935292455495902No Hit
ATACCAGGTGTGTGTCAGCAGCCGCGGTAATACGGAGGATGCGAGCGTTA7641.079400960723368No Hit
TACACATGACCGGACTACTCGGGTTTCTAATCCTGTTTGCTCCCCACGCT7050.9960440802486579No Hit
ATACCAGGTGTGTGCCAGCAGCCGCGGTAATACGGAAGGTCCAGGCGTTA7010.990392766318169No Hit
ATACCAGGTGTGTGCCAGCCGCCGCGGTAATACGTAGGGTGCGAGCGTTA6870.970613167561458No Hit
ATACCAGGTGTGTGTCAGCCGCCGCGGTAATACGGGGGGTGCGAGCGTTA6820.963549025148347No Hit
ATACCAGGTGTGTGCCAGCAGCCGCGGTAATACGGGGGGTGCGAGCGTTA6810.9621361966657247No Hit
ATACCAGGTGTGTGTCAGCCGCCGCGGTAATACGGAAGGTCCAGGCGTTA6790.9593105397004803No Hit
TACACATGACCGGACTACGAGGGTTTCTAATCCTGTTTGCTCCCCACGCT6790.9593105397004803No Hit
ATACCAGGTGTGTGTCAGCAGCCGCGGTAATACGGAGGGTGCGAGCGTTA6760.9550720542526138No Hit
TACACATGACCGGACTACTCGGGTTTCTAATCCTGTTTGCTACCCACGCT6620.9352924554959029No Hit
TACACATGACCGGACTACGAGGGTTTCTAATCCTGTTTGCTACCCACGCT6240.8816049731562587No Hit
ATACCAGGTGTGTGTCAGCAGCCGCGGTAATACGTAGGTCCCGAGCGTTG6170.8717151737779033No Hit
ATACCAGGTGTGTGCCAGCAGCCGCGGTAATACGTAGGTGGCAAGCGTTA5960.8420457756428369No Hit
ATACCAGGTGTGTGTCAGCCGCCGCGGTAATACGTAGGTGGCAAGCGTTA5900.8335688047471037No Hit
ATACCAGGTGTGTGTCAGCAGCCGCGGTAATACGTAGGGCGCGAGCGTTG5890.8321559762644815No Hit
ATACCAGGTGTGTGTCAGCAGCCGCGGTAATACGTATGTCACGAGCGTTA5690.8038994066120374No Hit
TACACATGACCGGACTACCGGGGTTTCTAATCCTGTTTGCTACCCACGCT5640.7968352641989261No Hit
TACACATGACCGGACTACCGGGGTTTCTAATCCTGTTTGCTCCCCACGCT5550.7841198078553263No Hit
ATACCAGGTGTGTGTCAGCCGCCGCGGTAATACGGAGGATGCGAGCGTTA5340.75445040972026No Hit
TACACATGACCGGACTACGCGGGTTTCTAATCCTGTTTGATCCCCACGCT5220.7374964679287934No Hit
ATACCAGGTGTGTGTCAGCCGCCGCGGTAATACGTAGGTGGCAAGCGTTG5130.7247810115851935No Hit
ATACCAGGTGTGTGCCAGCAGCCGCGGTAATACGTAGGTGGCAAGCGTTG4860.6866346425543939No Hit
ATACCAGGTGTGTGTCAGCCGCCGCGGTAATACGGAGGATACGAGCGTTA4720.666855043797683No Hit
ATACCAGGTGTGTGTCAGCCGCCGCGGTAATACGGAGGGTGCGAGCGTTA4720.666855043797683No Hit
TACACATGACCGGACTACCCGGGTTTCTAATCCTGTTTGCTCCCCACGCT4690.6626165583498164No Hit
ATACCAGGTGTGTGCCAGCAGCCGCGGTAATACGGAGGATACGAGCGTTA4550.6428369595931054No Hit
ATACCAGGTGTGTGCCAGCAGCCGCGGTAATACGGAGGATGCGAGCGTTA4420.6244701893190167No Hit
TACACATGACCGGACTACTAGGGTTTCTAATCCTGTTTGCTCCCCACGCT4370.6174060469059056No Hit
ATACCAGGTGTGTGTCAGCAGCCGCGGTAATACGTATGTCACAAGCGTTA4360.6159932184232834No Hit
TACACATGACCGGACTACCCGGGTTTCTAATCCTGTTTGCTACCCACGCT4320.6103419044927946No Hit
TACACATGACCGGACTACGGGGGTTTCTAATCCTGTTTGATCCCCACGCT4290.6061034190449279No Hit
TACACATGACCGGACTACTAGGGTTTCTAATCCTGTTTGCTACCCACGCT4210.5948007911839502No Hit
ATACCAGGTGTGTGCCAGCAGCCGCGGTAATACGGAGGGTGCGAGCGTTA4030.5693698784967505No Hit
TACACATGACCGGACTACTGGGGTTTCTAATCCTGTTTGATCCCCACGCT4010.5665442215315061No Hit
TACACATGACCGGACTACCAGGGTTTCTAATCCTGTTTGCTCCCCACGCT3980.5623057360836394No Hit
ATACCAGGTGTGTGCCAGCCGCCGCGGTAATACGGAAGGTCCAGGCGTTA3910.5524159367052839No Hit
ATACCAGGTGTGTGCCAGCCGCCGCGGTAATACGGGGGGTGCGAGCGTTA3780.5340491664311953No Hit
ATACCAGGTGTGTGTCAGCCGCCGCGGTAATACGTAGGTCCCGAGCGTTG3750.5298106809833286No Hit
TACACATGACCGGACTACGCGGGTATCTAATCCTGTTTGCTCCCCACGCT3740.5283978525007064No Hit
TACACATGACCGGACTACACGGGTTTCTAATCCTGTTTGCTCCCCACGCT3720.525572195535462No Hit
TACACATGACCGGACTACAGGGGTTTCTAATCCTGTTTGCTACCCACGCT3710.5241593670528397No Hit
TACACATGACCGGACTACAGGGGTTTCTAATCCTGTTTGCTCCCCACGCT3700.5227465385702176No Hit
TACACATGACCGGACTACTCGGGTTTCTAATCCTGTTTGATCCCCACGCT3680.5199208816049732No Hit
ATACCAGGTGTGTGCCAGCAGCCGCGGTAATACGTAGGTCCCGAGCGTTG3600.5086182537439954No Hit
TACACATGACCGGACTACACGGGTTTCTAATCCTGTTTGCTACCCACGCT3550.5015541113308845No Hit
ATACCAGGTGTGTGTCAGCCGCCGCGGTAATACGTAGGGCGCGAGCGTTG3470.49025148346990677No Hit
TACACATGACCGGACTACCGGGGTTTCTAATCCTGTTTGATCCCCACGCT3470.49025148346990677No Hit
ATACCAGGTGTGTGCCAGCCGCCGCGGTAATACGTAGGTGGCAAGCGTTA3390.4789488556089291No Hit
ATACCAGGTGTGTGCCAGCAGCCGCGGTAATACGTATGTCACGAGCGTTA3370.4761231986436847No Hit
TACACATGACCGGACTACGAGGGTTTCTAATCCTGTTTGATCCCCACGCT3350.47329754167844024No Hit
ATACCAGGTGTGTGTCAGCCGCCGCGGTAATACGTATGTCACGAGCGTTA3340.47188471319581804No Hit
ATACCAGGTGTGTGCCAGCAGCCGCGGTAATACGTAGGGCGCGAGCGTTG3330.47047188471319584No Hit
TACACATGACCGGACTACCAGGGTTTCTAATCCTGTTTGCTACCCACGCT3330.47047188471319584No Hit
ATACCAGGTGTGTGTCAGCCGCCGCGGTAATACGTATGTCACAAGCGTTA3210.4535179429217293No Hit
ATACCAGGTGTGTGTCAGCAGCCGCGGTAATACGGAAGGTCCGGGCGTTA2980.42102288782141845No Hit
TACACATGACCGGACTACGGGGGTATCTAATCCTGTTTGCTCCCCACGCT2930.4139587454083074No Hit
ATACCAGGTGTGTGCCAGCCGCCGCGGTAATACGTAGGTGGCAAGCGTTG2920.4125459169256852No Hit
ATACCAGGTGTGTGCCAGCCGCCGCGGTAATACGGAGGATGCGAGCGTTA2880.4068946029951964No Hit
TACACATGACCGGACTACTGGGGTATCTAATCCTGTTTGCTACCCACGCT2840.4012432890647076No Hit
TACACATGACCGGACTACGCGGGTATCTAATCCTGTTTGCTACCCACGCT2750.3885278327211077No Hit
ATACCAGGTGTGTGCCAGCCGCCGCGGTAATACGGAGGATACGAGCGTTA2690.3800508618253744No Hit
TACACATGACCGGACTACGGGGGTATCTAATCCTGTTTGCTACCCACGCT2620.3701610624470189No Hit
TACACATGACCGGACTACTCGGGTATCTAATCCTGTTTGCTCCCCACGCT2580.3645097485165301No Hit
ATACCAGGTGTGTGTCAGCAGCCGCGGTAATACGTAGGGGGCAAGCGTTA2470.3489686352076858No Hit
ATACCAGGTGTGTGCCAGCAGCCGCGGTAATACGTATGTCACAAGCGTTA2460.3475558067250636No Hit
TACACATGACCGGACTACTGGGGTATCTAATCCTGTTTGCTCCCCACGCT2420.34190449279457474No Hit
TACACATGACCGGACTACGAGGGTATCTAATCCTGTTTGCTACCCACGCT2420.34190449279457474No Hit
TACACATGACCGGACTACAAGGGTTTCTAATCCTGTTTGCTCCCCACGCT2410.3404916643119525No Hit
TACACATGACCGGACTACTCGGGTATCTAATCCTGTTTGCTACCCACGCT2360.3334275218988415No Hit
TACACATGACCGGACTACCGGGGTATCTAATCCTGTTTGCTCCCCACGCT2320.3277762079683526No Hit
TACACATGACCGGACTACAAGGGTTTCTAATCCTGTTTGCTACCCACGCT2290.323537722520486No Hit
TACACATGACCGGACTACGAGGGTATCTAATCCTGTTTGCTCCCCACGCT2270.3207120655552416No Hit
TACACATGACCGGACTACCCGGGTTTCTAATCCTGTTTGATCCCCACGCT2240.316473580107375No Hit
TACACATGACCGGACTACAGGGGTTTCTAATCCTGTTTGATCCCCACGCT2230.3150607516247528No Hit
ATACCAGGTGTGTGCCAGCCGCCGCGGTAATACGTAGGTCCCGAGCGTTG2150.3037581237637751No Hit
TACACATGACCGGACTACTAGGGTTTCTAATCCTGTTTGATCCCCACGCT2140.3023452952811529No Hit
ATACCAGGTGTGTGCCAGCCGCCGCGGTAATACGTAGGGCGCGAGCGTTG2050.289629838937553No Hit
ATACCAGGTGTGTGCCAGCCGCCGCGGTAATACGTATGTCACGAGCGTTA2020.28539135348968636No Hit
TACACATGACCGGACTACCGGGGTATCTAATCCTGTTTGCTACCCACGCT2020.28539135348968636No Hit
ATACCAGGTGTGTGCCAGCCGCCGCGGTAATACGGAGGGTGCGAGCGTTA2010.2839785250070641No Hit
ATACCAGGTGTGTGTCAGCCGCCGCGGTAATACGGAAGGTCCGGGCGTTA1950.27550155411133087No Hit
TACACATGACCGGACTACGCGGGTTTCTAATCCTGTTTGATACCCACGCT1930.2726758971460865No Hit
TACACATGACCGGACTACGCGGGTATCTAATCCTGTTTGATCCCCACGCT1930.2726758971460865No Hit
ATACCAGGTGTGTGTCAGCCGCCGCGGTAATACGTAGGGGGCAAGCGTTA1880.26561175473297544No Hit
TACACATGACCGGACTACACGGGTTTCTAATCCTGTTTGATCCCCACGCT1820.2571347838372422No Hit
ATACCAGGTGTGTGCCAGCCGCCGCGGTAATACGTATGTCACAAGCGTTA1820.2571347838372422No Hit
TACACATGACCGGACTACGCGGGTTTCTAATCCTGTTCGATACCCGCACC1770.2500706414241311No Hit
ATACCAGGTGTGTGTCAGCAGCCGCGGTAATACGTATGTCGCAAGCGTTA1760.2486578129415089No Hit
TACACATGACCGGACTACGGGGGTTTCTAATCCTGTTCGATACCCGCACC1750.2472449844588867No Hit
TACACATGACCGGACTACGGGGGTATCTAATCCTGTTTGATCCCCACGCT1750.2472449844588867No Hit
TACACATGACCGGACTACTGGGGTTTCTAATCCTGTTCGATACCCGCACC1740.24583215597626448No Hit
TACACATGACCGGACTACCAGGGTTTCTAATCCTGTTTGATCCCCACGCT1730.24441932749364229No Hit
ATACCAGGTGTGTGCCAGCAGCCGCGGTAATACGGAAGGTCCGGGCGTTA1660.23452952811528682No Hit
TACACATGACCGGACTACTAGGGTATCTAATCCTGTTTGCTCCCCACGCT1620.22887821418479795No Hit
TACACATGACCGGACTACGGGGGTTTCTAATCCTGTTTGATACCCACGCT1600.22605255721955356No Hit
TACACATGACCGGACTACAGGGGTATCTAATCCTGTTTGCTCCCCACGCT1590.22463972873693136No Hit
TACACATGACCGGACTACCCGGGTATCTAATCCTGTTTGCTCCCCACGCT1570.22181407177168688No Hit
TACACATGACCGGACTACAGGGGTATCTAATCCTGTTTGCTACCCACGCT1560.22040124328906469No Hit
TACACATGACCGGACTACTGGGGTATCTAATCCTGTTTGATCCCCACGCT1530.2161627578411981No Hit
TACACATGACCGGACTACGAGGGTTTCTAATCCTGTTCGATACCCGCACC1500.21192427239333148No Hit
TACACATGACCGGACTACGCGGGTTTCTAATCCTGTTCGCTCCCCATGCT1450.2048601299802204No Hit
ATACCAGGTGTGTGCCAGCAGCCGCGGTAATACGTAGGGGGCAAGCGTTA1440.2034473014975982No Hit
TACACATGACCGGACTACTGGGGTTTCTAATCCTGTTTGATACCCACGCT1430.20203447301497598No Hit
TACACATGACCGGACTACCCGGGTATCTAATCCTGTTTGCTACCCACGCT1430.20203447301497598No Hit
TACACATGACCGGACTACCAGGGTATCTAATCCTGTTTGCTCCCCACGCT1420.2006216445323538No Hit
TACACATGACCGGACTACACGGGTATCTAATCCTGTTTGCTACCCACGCT1370.19355750211924272No Hit
TACACATGACCGGACTACACGGGTATCTAATCCTGTTTGCTCCCCACGCT1350.1907318451539983No Hit
TACACATGACCGGACTACTCGGGTTTCTAATCCTGTTTGATACCCACGCT1330.1879061881887539No Hit
TACACATGACCGGACTACTAGGGTATCTAATCCTGTTTGCTACCCACGCT1320.18649335970613168No Hit
TACACATGACCGGACTACCGGGGTATCTAATCCTGTTTGATCCCCACGCT1310.18508053122350945No Hit
TACACATGACCGGACTACAAGGGTTTCTAATCCTGTTTGATCCCCACGCT1310.18508053122350945No Hit
TACACATGACCGGACTACTCGGGTATCTAATCCTGTTTGATCCCCACGCT1300.18366770274088726No Hit
TACACATGACCGGACTACGAGGGTTTCTAATCCTGTTTGATACCCACGCT1300.18366770274088726No Hit
TACACATGACCGGACTACGGGGGTTTCTAATCCTGTTCGCTCCCCATGCT1290.18225487425826506No Hit
TACACATGACCGGACTACTCGGGTTTCTAATCCTGTTCGATACCCGCACC1230.1737779033625318No Hit
ATACCAGGTGTGTGTCAGCAGCCGCGGTAATACGTAGGTGGCGAGCGTTG1220.1723650748799096No Hit
TACACATGACCGGACTACGGGGGTTTCTAATCCCGTTCGCTCCCCTGGCT1170.16530093246679853No Hit
TACACATGACCGGACTACCGGGGTTTCTAATCCTGTTCGATACCCGCACC1160.1638881039841763No Hit
ATACCAGGTGTGTGTCAGCAGCCGCGGTAATACGGAGGGGGCAAGCGTTA1160.1638881039841763No Hit
ATACCAGGTGTGTGTCAGCAGCCGCGGTAATACGTATGTCGCGAGCGTTA1160.1638881039841763No Hit
TACACATGACCGGACTACGAGGGTATCTAATCCTGTTTGATCCCCACGCT1150.1624752755015541No Hit
ATACCAGGTGTGTGTCAGCAGCCGCGGTAATACGGAAGGTCCCGGCGTTA1140.1610624470189319No Hit
ATACCAGGTGTGTGCCAGCAGCCGCGGTAATACGTATGTCGCAAGCGTTA1090.15399830460582084No Hit
TACACATGACCGGACTACCGGGGTTTCTAATCCTGTTTGATACCCACGCT1090.15399830460582084No Hit
TACACATGACCGGACTACGCGGGTTTCTAATCCCGTTCGCTCCCCTGGCT1080.15258547612319864No Hit
TACACATGACCGGACTACCGGGGTTTCTAATCCTGTTCGCTCCCCATGCT1080.15258547612319864No Hit
TACACATGACCGGACTACTGGGGTTTCTAATCCCGTTCGCTCCCCTGGCT1080.15258547612319864No Hit
TACACATGACCGGACTACCAGGGTATCTAATCCTGTTTGCTACCCACGCT1060.14975981915795422No Hit
ATACCAGGTGTGTGCCAGCCGCCGCGGTAATACGGAAGGTCCGGGCGTTA1060.14975981915795422No Hit
TACACATGACCGGACTACCCGGGTTTCTAATCCTGTTCGATACCCGCACC1040.1469341621927098No Hit
ATACCAGGTGTGTGTCAGCCGCCGCGGTAATACGTATGTCGCAAGCGTTA1030.1455213337100876No Hit
TACACATGACCGGACTACTGGGGTTTCTAATCCTGTTCGCTCCCCATGCT1020.1441085052274654No Hit
TACACATGACCGGACTACTAGGGTTTCTAATCCTGTTCGATACCCGCACC1020.1441085052274654No Hit
ATACCAGGTGTGTGTCAGCAGCCGCGGTAATACGGAGGGTGCAAGCGTTA990.13987001977959876No Hit
TACACATGACCGGACTACGAGGGTTTCTAATCCTGTTCGCTCCCCATGCT970.13704436281435434No Hit
TACACATGACCGGACTACTCGGGTTTCTAATCCTGTTCGCTCCCCATGCT960.13563153433173214No Hit
TACACATGACCGGACTACAGGGGTTTCTAATCCTGTTCGATACCCGCACC940.13280587736648772No Hit
TACACATGACCGGACTACTAGGGTTTCTAATCCTGTTTGATACCCACGCT920.1299802204012433No Hit
TACACATGACCGGACTACAAGGGTATCTAATCCTGTTTGCTCCCCACGCT900.12715456343599885No Hit
TACACATGACCGGACTACTCGGGTTTCTAATCCCGTTCGCTCCCCTGGCT900.12715456343599885No Hit
TACACATGACCGGACTACCCGGGTATCTAATCCTGTTTGATCCCCACGCT900.12715456343599885No Hit
TACACATGACCGGACTACCGGGGTTTCTAATCCCGTTCGCTCCCCTGGCT890.12574173495337665No Hit
TACACATGACCGGACTACAAGGGTATCTAATCCTGTTTGCTACCCACGCT870.12291607798813224No Hit
TACACATGACCGGACTACTAGGGTATCTAATCCTGTTTGATCCCCACGCT850.12009042102288782No Hit
ATACCAGGTGTGTGTCAGCCGCCGCGGTAATACGTATGTCGCGAGCGTTA850.12009042102288782No Hit
TACACATGACCGGACTACACGGGTATCTAATCCTGTTTGATCCCCACGCT840.11867759254026561No Hit
TACACATGACCGGACTACACGGGTTTCTAATCCTGTTCGATACCCGCACC840.11867759254026561No Hit
ATACCAGGTGTGTGTCAGCAGCCGCGGTAATACGTAGGTGGCGAGCGTTA830.11726476405764341No Hit
TACACATGACCGGACTACAGGGGTTTCTAATCCTGTTTGATACCCACGCT830.11726476405764341No Hit
ATACCAGGTGTGTGTCAGCAGCCGCGGTAATACGTAGGGGGCTAGCGTTA810.11443910709239898No Hit
TACACATGACCGGACTACCAGGGTTTCTAATCCTGTTCGATACCCGCACC800.11302627860977678No Hit
ATACCAGGTGTGTGCCAGCCGCCGCGGTAATACGTAGGGGGCAAGCGTTA790.11161345012715457No Hit
TACACATGACCGGACTACCCGGGTTTCTAATCCTGTTTGATACCCACGCT790.11161345012715457No Hit
TACACATGACCGGACTACCCGGGTTTCTAATCCTGTTCGCTCCCCATGCT780.11020062164453234No Hit
TACACATGACCGGACTACGGGGGTTTCTAATCCTGTTCGCTCCCCACGCT770.10878779316191015No Hit
TACACATGACCGGACTACACGGGTTTCTAATCCTGTTTGATACCCACGCT750.10596213619666574No Hit
TACACATGACCGGACTACAGGGGTATCTAATCCTGTTTGATCCCCACGCT740.10454930771404351No Hit
TACACATGACCGGACTACCAGGGTTTCTAATCCTGTTTGATACCCACGCT730.1031364792314213No Hit
TACACATGACCGGACTACTAGGGTTTCTAATCCTGTTCGCTCCCCATGCT730.1031364792314213No Hit
ATACCAGGTGTGTGTCAGCCGCCGCGGTAATACGGAAGGTCCCGGCGTTA710.1003108222661769No Hit

[OK]Adapter Content

Adapter graph