SAS能重复执行data 或 proc过程吗？-经管之家官网！

大家好，本人是SAS小白一枚，目前项目必须用SAS。
我现在有一个很大的数据集，里面每个观测包含3个变量，分别是tag,time, 和lying。每个tag下每天有24个时间值，对应24个lying值。目标是做每个tag下每个时间内lying值的线性回归。假设我有100个tag，则要做100*24次线性回归。
这是一个双重循环的问题，我知道怎么选出每个tag下每个time的值，并对其回归，但是不会循环这个过程。而且回归的结果输出在一result窗口里，能不能像matlab那样，将这些回归结果输出的到变量里，然后统一输出到一个excel文件里？以下是我目前的代码，一次只能处理一个tag，然后手动改tag值，再运行代码。能不能自动识别tag值，然后逐个对这些tag进行回归？由于不会循环，所以用的最笨办手动循环的方法，请不要嘲笑我。。。
再重复下我的目标，1自动识别tag值，并自动对每个tag值的24个时间段的值进行回归。2 将回归结果按tag 和时间段输出到excel文件中。
如果有人能实在上述功能，请联系我，可付报酬。论坛币，或者别的什么币都可以。
数据：代码：
proc import datafile="Z:/nicky/data.csv" out=mydata dbms=csv replace;
getnames=no;
run;
proc contents data=mydata;
run;
Data Cowtag;
Set Mydata;
If VAR1 = 1332 then output;
Run;
Data Cowlying0 Cowlying1 Cowlying2 Cowlying3 Cowlying4 Cowlying5 Cowlying6 Cowlying7 Cowlying8 Cowlying9 Cowlying10 Cowlying11 Cowlying12 Cowlying13 Cowlying14Cowlying15 Cowlying16 Cowlying17 Cowlying18 Cowlying19 Cowlying20 Cowlying21 Cowlying22 Cowlying23;
Set Cowtag;
If VAR3 = "0:00:00" then output Cowlying0;
If VAR3 = "1:00:00" then output Cowlying1;
If VAR3 = "2:00:00" then output Cowlying2;
If VAR3 = "3:00:00" then output Cowlying3;
If VAR3 = "4:00:00" then output Cowlying4;
If VAR3 = "5:00:00" then output Cowlying5;
If VAR3 = "6:00:00" then output Cowlying6;
If VAR3 = "7:00:00" then output Cowlying7;
If VAR3 = "8:00:00" then output Cowlying8;
If VAR3 = "9:00:00" then output Cowlying9;
If VAR3 = "10:00:00" then output Cowlying10;
If VAR3 = "11:00:00" then output Cowlying11;
If VAR3 = "12:00:00" then output Cowlying12;
If VAR3 = "13:00:00" then output Cowlying13;
If VAR3 = "14:00:00" then output Cowlying14;
If VAR3 = "15:00:00" then output Cowlying15;
If VAR3 = "16:00:00" then output Cowlying16;
If VAR3 = "17:00:00" then output Cowlying17;
If VAR3 = "18:00:00" then output Cowlying18;
If VAR3 = "19:00:00" then output Cowlying19;
If VAR3 = "20:00:00" then output Cowlying20;
If VAR3 = "21:00:00" then output Cowlying21;
If VAR3 = "22:00:00" then output Cowlying22;
If VAR3 = "23:00:00" then output Cowlying23;
Run;
Data Cowlying0;
Set Cowlying0;
h=substr(VAR6,1,1);
m=substr(VAR6,3,2);
y0=h*60+m;
x0=_n_;
Run;
proc reg;
model y0=x0;
run;
Data Cowlying1;
Set Cowlying1;
h=substr(VAR6,1,1);
m=substr(VAR6,3,2);
y1=h*60+m;
x1=_n_;
Run;
proc reg;
model y1=x1;
run;
Data Cowlying2;
Set Cowlying2;
h=substr(VAR6,1,1);
m=substr(VAR6,3,2);
y2=h*60+m;
x2=_n_;
Run;
proc reg;
model y2=x2;
run;
Data Cowlying3;
Set Cowlying3;
h=substr(VAR6,1,1);
m=substr(VAR6,3,2);
y3=h*60+m;
x3=_n_;
Run;
proc reg;
model y3=x3;
run;
…… 一直重复到cowlying23