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= | ch YE
= ¥ i
EE zi.
3. SOURCE
ig = hat IPN,
Ye 4
Fi 6 Fe
LENGTH OF OBSE
LL "a B - - _y Ny =
TE : TIME GROUP
5
aT i t
hi ad A Ba = i i i 0
OF OBSERVATION
ve ;
- jE
i - Wy, i.
in a 5 1
i i =
5 mW
i & iw
el WE -
=
| a ll
i iW
- |
_ |
be i I) ee — y=
i
ili a
i ii —
pT ee = ——