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Failure Statistics

Monthly failure rate of Street Lights (In Percentage)

(Monthly Average of Non-burning Streetlight Luminaires)

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Month 2015-16 2014-15 2013-14 2012-13 2011-12 2010-11
April 1.29% 1.12% 1.15% 1.28% 1.09 1.55
May 1.38% 1.09% 1.21% 1.29% 1.20 1.54
June 1.61% 1.37% 1.69% 1.14% 1.33 1.75
July 1.75% 1.52% 1.74% 1.46% 1.44 1.75
August 1.64% 1.74% 1.69% 1.55% 1.56 1.61
September 1.56% 1.54% 1.63% 1.48% 1.57 1.59
October 1.43% 1.34% 1.61% 1.30% 1.40 1.51
November 1.26% 1.30% 1.53% 1.21% 1.42 1.27
December 1.25% 1.27% 1.21% 1.16% 1.36 1.25
January 1.25% 1.25% 1.20% 1.18% 1.24 1.23
February 1.25% 1.23% 1.23% 1.23% 1.29 1.15
March 0.87% 1.27% 1.15% 1.19% 1.27 1.11
Average (In %) 1.38 1.34 1.42 1.29 1.35 1.44
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Month 2009-10 2008-09 2007-08 2006-07 2005-06 2004-05 2003-04
April 1.55 1.64 1.58 1.62 2.24 2.01 2.29
May 1.72 1.77 1.87 2.2 2.33 1.97 2.82
June 1.91 2.37 2.69 3.37 3.01 2.18 4.48
July 3.02 2.40 4.10 2.36 6.29 3.59 4.63
August 2.85 2.03 3.54 9.94 3.78 3.45 3.97
September 2.00 1.93 2.8 2.77 2.95 3.37 4.67
October 1.91 1.60 2.69 1.84 2.14 3.28 3.35
November 1.70 1.68 2.44 1.93 1.85 2.68 3.32
December 1.71 1.52 1.84 1.48 1.76 2.42 3.18
January 1.73 1.54 1.81 1.41 1.86 2.36 3.88
February 1.76 1.49 1.67 1.42 1.79 2.39 3.58
March 1.79 1.55 1.64 1.44 1.68 2.28 3.61
Average (In %) 1.97 1.79 2.39 3.18 2.64 2.67 3.60
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Month 2002-03 2001-02 2000-01 1999-00 1998-99 1997-98 1996-97
April 2.76 3.10 2.60 3.10 1.50 1.90 4.50
May 2.50 3.40 3.00 3.50 1.62 1.70 3.90
June 2.60 6.10 4.40 3.50 3.80 3.10 5.30
July 4.30 4.10 6.40 4.90 4.20 2.60 4.30
August 5.57 3.70 4.00 5.20 4.60 2.00 2.90
September 6.57 3.70 3.30 4.70 4.30 2.20 2.40
October 6.58 3.00 3.30 3.70 5.06 2.00 2.40
November 4.99 2.90 2.30 4.20 5.04 1.90 1.80
December 2.38 2.90 2.50 2.60 5.30 1.70 1.70
January 2.25 2.80 3.09 2.80 3.29 1.60 2.10
February 2.68 2.70 2.63 2.90 2.33 1.50 2.10
March 2.60 2.40 2.88 2.60 2.60 1.50 1.90
Average (In %) 3.80 3.40 3.36 3.64 3.60 1.97 2.94