PNG
IHDR *hK pHYs .# .#x?v iTXtXML:com.adobe.xmp R1_fig4_ adobe:docid:photoshop:07793c1c-b6b0-11e8-91a1-aba3b26e32ef 8 8 8 c
I IDATxy\U?sZUפ+$h$~`LAe|78NbqaVQPI\F$.?$&N23 vkRRun(;ՕYHwխ[U}އJ) @b> )B jL
2- T+dZ Vȴ Pi Z! @B jL J :::2Ldrɒ%iN3rGJRAL!ʎfYֲe,˚Lqn0F?֎x*:p83{X JRO<Į]ϖmkk[hѲeVZuyMo{_іd2Sy#:1tO絩ȶ}ٶ=#tEcc4+|">^f͟=Ͷ:^&~ÇwyG馛=ZzO}S/_z^xᅥG,??
Oi[v5ʞڌ?s,Y2̓}Co~fS͟O|L&?=3OeE
LT'4n˲?sj]o~sѢEO}cU_~/88_?OmmmOܱWj˲9}svN=bdˀw-dUvvfK|m|훩uttۼy^m۟'7}2T*o
ox>mܹs=dm߾=JU42۶{7߽wԟ2Z[[Kx95J=?NA¾i6AO:l+] Ѻߞ
۶?\uU]]]'N={L'
vuuuuuMygOl۶oOS\ѐi*ctEtRUcx:9A0瞎\X`}
+wOt2<.q͛73X;3r&3Rp.T'`F@e:::1#N$U]M&L&gxv"F(+ϔ0P-Z謳ΚîZ*Lm:::7kkkYqWnkk8&h6L]J&qWWWGGǘoƳ:l5 n`^zkkoo{߾}ڼyskk> .ǭ8۶|pm۶ʴ[l>0Wt_~4'8455M8PGG{GJRwqG8l
g'+dZikk۶m[1UN^G'i.p.e2;W^zqodWiO`Zj_>;ㅓG?IM{~^OR/,Y2p pعsgn]zױͶ[oKs=]tQdZBȞ={>Lݻ80SupYg53R.^n݉8);xGJ߱l۶mݺuNn=bh:wo#&4z1 MhrF;̚}k?.coܸ:) [lr?-W:N-eYU6j6yѴt k2B*^1hZ:AcjQ_|/3(LP1e1ҶNdVDijmmm-s|he5a[z'>Җi| 'k֬'^-ܰa9S:Vp+Zb.)WiHt]Ө6lK8OĦPՐi*f~=zSx :g^9$s饗-Ӛm 8)S),˺K2I&]S%KLmt==B~QY*E!TRY>Zkp8ŕd2y"֥Y,Pa,+{G&3 '=۶OIYiBqK?qeyxeS[[]F_y?l0i*i
Ԗbrq{Nb+V\tEGNRwf6Y5{Iit=0JS'>ҶʢѤjbftڏKB!i*,LlEⲁ]R[vv͛7?X3k> NzS,??l5ktڏ˖N8439 ^xi*lRel9nqdӆД
Y3}҉ UaSgmȔۏg84=Oc2_TdZ
+<~q.>/UykYf_(۫
)nե=۶Zm;woiYօ^8kSk?.MeēX^ˠ2-@o.ŧexbR@m۶},}0f9 8i\z˖-+Juwޓu߯kcPY#<2X{
6r->`[S!Teղ;5swӖۘخm{UW]U ,WzYg}