Data values were collected and recorded about the time, in minutes, a class of second graders spent independently reading.


0 9
1 0 5 8
2 0 0 2 5 5 9
3 0 2 2 2 4 5 6 7
4 1 3 5

Key: 1|0 represents 10 minutes

What is the median number of minutes the second graders spent reading?
29
32
30
29.5