vp	lernbed	zeit30s	zeit60s	zeit180s
s1	1	7	7	8
s2	1	3	11	14
s3	1	6	9	10
s4	1	6	11	11
s5	1	5	10	12
s6	1	8	10	10
s7	1	6	11	11
s8	1	7	11	12
s9	2	16	16	24
s10	2	7	10	29
s11	2	11	13	10
s12	2	9	10	22
s13	2	10	10	25
s14	2	11	14	28
s15	2	8	11	22
s16	2	8	12	24