"班级"	"不及格科目数"	"学生人数"
"1班"	4	1
"3班"	2	6
"4班"	4	7
"1班"	5	4
"2班"	3	5
"3班"	3	8
"2班"	4	1
"4班"	2	6
"2班"	5	6
"3班"	5	10
"1班"	3	5