H. WALTER AND E. STADELMANN
120
100
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120 \
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100 E
80
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120 χ"
9 10 12
1200
1000
800
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200
0
1200
1000
800
800
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200
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1200
1000
800
800
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200
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120
100
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6 8 10 12 Vt 16 18
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6
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Light-dark time (hours)
276
120
100
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120 \
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100 E
80
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120 χ"
9 10 12
1200
1000
800
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200
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1200
1000
800
800
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1200
1000
800
800
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120
100
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6 8 10 12 Vt 16 18
2V 2
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6
h
Light-dark time (hours)
276