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["第二学月班级文化建设检查结果（2017年4月）"]
["七年级","平均分","八年级","平均分","九年级","平均分"]
[1,58.6,1,60,1,55]
[2,56.4,2,57.5,2,58.5]
[3,55,3,57.5,3,59.25]
[4,55.4,4,59.75,4,58.5]
[5,56,5,58.75,5,57.75]
[6,58,6,57.75,6,59.75]
[7,56.8,7,55.25,7,56]
[8,56.2,8,58.5,8,59.25]
[9,55,9,50.5,9,58.25]
[10,55.8,10,58.5,10,47.25]
[11,50.57142857142857,11,54,11,59]
[12,56.6,12,48.25,12,58.5]
[13,53.4,13,48,13,59.75]
[14,55,14,53,14,59.5]
[15,55.4,15,59.75,15,49]
[16,57.4,16,60,16,60]
[17,57.2,17,57.5,17,59.25]
[18,55.2,18,57.75,18,59.75]
[19,55.6,19,54.75,19,58.25]
[20,56.4,20,57.5,20,59.75]
[21,57.4,21,59.25,21,55.5]
[22,55,22,54.75,22,53.75]
[{"$nulls":4},23,59]