Matlab隔几个选一个值,关于间隔取值的问题

大家好，想问大家一个关于间隔取值的问题。我想每隔0.5取数据中的值，并且求在这0.5区间内的平均值。

比如我想首先取29.9637422423955，29.8369314249016，29.7114384855687，29.5827110234418这四个数字为一组，然后求他的平均值，得到一个值，然后再做下一个0.5区间的平均值计算。请问大家该怎么做呢？谢谢了！！

数据如下：

29.9637422423955

29.8369314249016

29.7114384855687

29.5827110234418

29.4561485278515

29.3329475781513

29.2027381531742

29.0764490468203

28.9561388457877

28.8218764987760

28.6958094802719

28.5803089984078

28.4422961221201

28.3164947859407

28.2059047349483

28.0626321324192

27.9383084945991

27.8316911456230

27.6893827854511

27.5642908065423

27.4393216999070

27.2672104818122

27.1285261051760

27.0025450363335

26.8766405383317

26.7508135922380

26.6250779202624

26.4994554804877

26.3739707868646

26.2172767277812

26.0839156216551

25.9586217990237

25.8335718674273

25.6956193010718

25.5711202793926

25.4469535064072

25.3132632904991

25.1897833992171

25.0666659981456

24.9348178123328

24.8124623952671

24.6819359667165

24.5604196086097

24.4393526101610

24.3108130192491

24.1907821034236

24.0713405994926

23.9455905087055

23.8274542936577

23.7100587098695

23.5870606480343

23.4714679554209

23.3512525421956

23.2379482623289

23.1259010856548

23.0099928121006

22.9007369952628

22.7930267336862

22.6827693373813

22.5785796633084

22.4762136151405

22.3717646326649

22.2731348055633

22.1763822916175

22.0764892809013

21.9835106492312

21.8924088374359

21.7995262042896

21.7121845038385

21.6267218478177

21.5406873434670

21.4590240738216

21.3792536994405

21.2991672549267

21.2234164349300

21.1496818025216

21.0779808902216

21.0054245622562

20.9377102879457

20.8719351469177

20.8080770070217

20.7432623178966

20.6831629600915

20.6248887554297

20.5684456239565

20.5107443232611

20.4579719818300

20.4073807842373

20.3590000586472

20.3126444476064

20.2683198240946

20.2227490294497

20.1820583073489

20.1434380129549

20.1069070388022

20.0724842774254

20.0401886213589

20.0100389631374

19.9787392147200

19.9529281062133

19.9294857614529