<image>There are 50 students in a class who took a 100-meter test, and all the results are between 13 seconds and 18 seconds. The test results are divided into five groups: the first group [13,14); the second group [14,15), ..., the fifth group [17,18]. The frequency distribution histogram obtained by the grouping method above is shown in the figure. If a score is considered good when it is greater than or equal to 14 seconds and less than 16 seconds, then the number of students with good scores in this 100-meter test is ___.
