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vaata faili - Viru Peipsi

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Aastaist 1986 – 2001 on üldlämmastiku sisaldus Põltsamaa jõe vees langenud 5-6 mg/l-lt 2 mg/lni,<br />

kusjuures kahanev trend on statistiliselt kõrge usaldusväärsusega ja korrelatsiooni koefitsient<br />

on 0,73.<br />

100

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