Helium Report for Month of April 2000 Users Amount %ofTtl Recovrd Lost %Lost $$$$$ Adams 301 6% 289 12 4% $180.50 Andraka 40 1% 40 0 0% $20.00 Angerhofer 45 1% 20 25 56% $85.00 B122 472 9% 440 32 7% $316.00 B155 227 5% 214 13 6% $146.00 Chemistry 841 17% 699 142 17% $2,037.00 Hebard 239 5% 234 5 2% $132.00 Ihas 82 2% 80 2 2% $46.00 NSC 0 0 0 $0.00 Meisel 0 -1 1 $2.50 MKBay#1 988 20% 833 155 16% $881.50 MKBay#2 0 0 0 $0.00 MKBay#3 1082 21% 1073 9 1% $563.50 Sharifi 200 4% 138 62 31% $255.00 Stewart 102 2% 102 0 0% $51.00 Sullivan 353 7% 328 25 7% $239.00 Takano 0 0 0 $0.00 Tanner 68 1% 44 24 35% $94.00 W129 4 0% 4 0 0% $2.00 ================================================================ TOTAL 5040 507 $5,049.00 lL lost 778 lL lost / day 26 % of usage lost 15% lL recovered 6344 recovery rate 88% transfers 47 $ amount is billed at $.50/lL used for physics or $2.00/lL for non-physics plus $2.50/lL lost.