Taf. I. 



Om 5m lOtn ISm 20ni 25ni 30ni Oro 5m 10m 15m 20m 25m 30m 0 m 5m 10m 15m 20m 25m 30m 



30»/o 



Om 5m 10m 15m 20m 25m 3Qm Om 5m 10m 15m 20m25m 30m Om 5m 10m 15m 20m25m 30m 



30 0/0 



