求助一列time series 的变量

1.37079180
0.95923221
1.15729310
1.23707500
-0.88732593
-2.05287480
-0.52937218
-1.68134020
0.73650686
1.88496320
2.48712130
1.32720340
1.13785070
3.17020750
2.59933510
2.25144580
2.04486200
2.33520840
2.90531600
3.41456870
2.61896800
3.65103800
4.21649500
6.17208210
5.75060040
6.80899480
5.19009240
6.25018620
5.08693640
3.52623290
3.15860410
4.14587030
3.76746570
3.15723960
3.42925480
3.60534570
5.50454260
5.51340640
6.81518290
7.37349080
6.97697780
6.14879760
6.55146430
5.78047770
5.58532310
6.78736450
6.45854470
4.76165110
4.64121070
4.28468030
2.91700850
3.39533560
3.27483920
2.87486850
3.00546000
2.90880500
2.92564180
2.30814510
2.71921650
1.64234300
1.20836050
2.74956940
1.12331830
0.73963903
1.33023580
2.03597060
3.40703460
2.57777720
1.57454530
-0.23998395
-2.90046830
-2.70912580
-3.12331980
-2.02114480
-0.90274921
0.76462452
1.24897810
1.72195800
1.77369430
0.55561007
0.40352708
-0.19966367
0.14264825
0.39558179
0.19759815
0.47091893
1.21569910
1.13942570
2.37169840
2.74002760
0.56386593
1.53141750
2.10812600
1.31530170
0.52778877
0.67972010
0.75414769
-0.12034268
-1.84263640
-0.18787760

(a)plot the sequences against time and identify the stationarity of each time series:
我给的程序是：
proc  gplot data=hw.hwdata;
symbol i=none v=star;
plot  y1*y6; /*y6是一列时间向量*/
run;

proc arima data=hw.hwdata;
identify var=y1 stationarity=(adf=1);
run;

(b) draw correlogram of each series and conjecture its underlying process:
我想给的程序是：
proc arima data=hw.hwdata;
identify var=y1 nlag=24 outcov=acf;
run; quit;
data acf1;
set acf;
if lag=0 then up0=1;
else up=1.96/sqrt(n);
lo=-up;
run;
proc gplot data=acf1
axis1 order=0 to 1 by 0.2 label=(a=90) length=4 in;
axis2 order=0 to 25 by 5 length=6 in;

plot (corr up lo)*lag /frame overlay vaxis=axis1 haxis=axis2 vref=0 cvref=red;
symbol1 color=blue i=needle v=none w= 6 ;
symbol2 color=red i=join v=none w=2; symbol3 color=red i=join v=none w=2;
label corr='r(k)=Autocorrelation';
Title BOLD C=BL H=18pt FONT=swissb'Figure5. Correlogram for LogLos With 8 hours
Time interval';       
Run;
ODS PDF CLOSE;

是借鉴网络上一段程序，但是有点不明白其中的意思，有没有大牛解释一下我的程序是对的么？还有正确的应该是什么样子的。
第三问：based on your conjecture in (b), estimate equation. add or substract relevant regressors to see how AIC, BIC, Q-stats changes.
这个我第二问的结果自己没有完全看懂所以没有什么猜想还：）
谢谢各位大牛了！