POWT being the worst, a day,
2012/01/06 0.20 0.20 0.060 0.062 65,490,016 0.062
2012/01/05 0.080 0.19 0.080 0.19 64,038,695 0.19
SPAH might have been the next quickest,
2011/12/27 0.40 0.42 0.31 0.35 1,819,776 0.35
2011/12/26 - 0.54 0.32 - - -
2011/12/23 0.32 0.54 0.32 0.39 2,138,689 0.39
2011/12/22 0.34 0.44 0.29 0.36 2,643,784 0.36
2011/12/21 0.45 0.45 0.19 0.43 6,011,657 0.43
2011/12/20 0.80 0.83 0.35 0.47 8,279,755 0.47
2011/12/19 0.44 0.68 0.42 0.68 7,520,541 0.68
2011/12/16 0.31 0.38 0.21 0.37 6,057,666 0.37
2011/12/15 0.080 0.30 0.080 0.27 10,488,603 0.27
From what I have found the norm to be, 2 weeks average,the examples shown were most recent and were 2 quicker ones