4 B pe ° 0 0 0 -09 oO "06 8 9 10 ° ‘53 ° T ° ‘12 18 6 O¢ Al ° o 06 o 22 WOTHO I66 E FIG. 15. RADIOACTIVITY OF WATER FROM 75 METER DEPTH IN THOUSANDS OF DISINTEGRATIONS PER MINUTE PER LITER.
4 B pe ° 0 0 0 -09 oO "06 8 9 10 ° ‘53 ° T ° ‘12 18 6 O¢ Al ° o 06 o 22 WOTHO I66 E FIG. 15. RADIOACTIVITY OF WATER FROM 75 METER DEPTH IN THOUSANDS OF DISINTEGRATIONS PER MINUTE PER LITER.