CONCORD WASTEWATER PLAN, CALIFORNIA

Monthly Total Growing Degree Days

(041967)

Base Temperature = 40 F

File last updated on Apr 4, 2013
*** Note *** Provisional Data *** After Year/Month 201303
a = 1 day missing, b = 2 days missing, c = 3 days, ..etc..,
z = 26 or more days missing, A = Accumulations present
Long-term means based on columns; thus, the monthly row may not
sum (or average) to the long-term annual value.
Months with 5 missing days or less use mean for missing day(s)
Individual Months not used for annual or monthly statistics if more than 5 days are missing.
Individual Years not used for annual statistics if any month in that year has more than 5 days missing.
YEAR(S JAN FEB MAR APR MAY JUN JUL AUG SEP OCT NOV DEC ANN
1991 0.00 z 0.00 z 0.00 z 0.00 z 0.00 z 0.00 z 0.00 z 0.00 z 951.00 872.50 510.50 243.50 2577.50
1992 203.00 471.00 539.00 703.50 901.50 872.00 1018.00 1064.50 932.00 865.50 491.00 245.50 8306.50
1993 236.50 305.50 579.50 599.00 799.00 971.50 999.00 1040.00 945.00 807.50 426.00 245.00 7953.50
1994 284.00 291.50 552.00 625.00 765.00 906.00 970.00 1025.50 913.50 758.50 298.50 192.50 7582.00
1995 395.00 401.50 442.50 568.50 704.50 863.00 1050.00 1072.50 964.50 837.50 610.00 428.00 8337.50
1996 325.50 445.00 546.00 654.00 833.00 955.00 1092.50 1093.00 888.50 767.50 495.00 406.50 8501.50
1997 316.50 395.50 587.50 669.00 948.00 933.00 1044.00 1030.50 1014.00 746.00 528.00 259.50 8471.50
1998 345.00 326.00 508.00 546.00 602.00 789.50 0.00 z 1092.50 956.00 706.00 449.00 213.50 6533.50
1999 255.50 305.00 395.50 575.50 683.03 a 846.21 a 967.00 1000.00 915.52 a 829.50 545.50 327.50 7645.76
2000 386.50 401.86 a 537.00 657.00 0.00 z 920.50 935.50 1005.50 956.50 717.13 a 356.50 317.50 7191.49
2001 239.00 317.00 587.50 521.50 958.50 982.50 957.00 999.50 878.00 829.00 520.00 313.10 a 8102.60
2002 233.50 368.00 449.50 587.00 733.00 907.00 1017.00 968.00 938.00 752.00 509.50 355.00 7817.50
2003 380.00 347.00 560.00 478.00 765.50 895.50 1088.50 1019.50 983.00 861.00 404.50 333.00 8115.50
2004 291.00 365.00 688.50 683.50 810.50 902.50 991.50 1055.00 982.00 718.50 433.50 303.50 8225.00
2005 233.50 415.00 571.00 573.50 775.00 825.50 1094.00 1023.50 842.50 767.50 527.00 387.00 8035.00
2006 352.50 395.00 368.50 559.00 804.50 968.00 1144.00 964.50 878.00 710.50 482.50 284.50 7911.50
2007 235.50 365.00 599.50 640.50 796.00 914.00 1007.50 1055.50 882.00 689.50 500.00 254.50 7939.50
2008 244.00 351.50 489.50 577.50 797.50 945.50 1028.50 1061.50 925.00 c 806.00 521.00 241.00 7988.50
2009 306.00 317.00 498.00 605.00 814.50 847.50 b 989.50 1028.88 b 1012.00 704.00 441.50 229.00 7792.88
2010 293.00 394.50 499.50 506.50 679.50 903.62 a 939.00 940.00 971.50 758.00 458.50 354.00 7697.62
2011 254.00 290.50 458.80 a 583.00 685.10 a 851.11 c 992.52 a 986.66 b 1001.50 781.20 a 410.00 289.85 a 7584.23
2012 322.92 a 388.91 a 458.50 619.50 819.00 913.85 d 1004.52 e 630.50 l 600.00 i 755.50 471.50 265.50 6019.69
2013 150.00 269.00 500.50 19.50 z 0.00 z 0.00 z 0.00 z 0.00 z 0.00 z 0.00 z 0.00 z 0.50 z 919.50
Period of Record Statistics
MEAN 285.56 360.28 518.92 596.76 783.73 900.63 1016.48 1026.33 939.52 774.56 472.25 294.95 8000.45
S.D. 63.57 53.26 73.42 58.61 89.18 50.79 55.45 42.11 47.50 56.56 67.99 63.62 288.17
SKEW 0.01 0.15 0.00 -0.08 0.14 -0.31 0.61 -0.25 -0.23 0.27 -0.59 0.47 0.20
MAX 395.00 471.00 688.50 703.50 958.50 982.50 1144.00 1093.00 1014.00 872.50 610.00 428.00 8501.50
MIN 150.00 269.00 368.50 478.00 602.00 789.50 935.50 940.00 842.50 689.50 298.50 192.50 7582.00
NO YRS 22 22 22 21 20 21 20 20 21 22 22 22 18