seconds  No of files
30:      72
60:      93
90:      75
120:     26
150:     18
180:     10
210:     5
240:     2
270:     1
300:     1
330:     2
360:     1
390:     1
450:     1
840:     1

And for the size of files, it's goes up in 25000000 kilobytes

Size of file   No of files
25000000:      48
50000000:      59
75000000:      30
100000000:     21
125000000:     69
150000000:     13
175000000:     4
200000000:     3
250000000:     1
350000000:     6
425000000:     13
450000000:     3
550000000:     2
675000000:     1
1075000000:    1