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