分析人员测定某项目的单个空白值20次，其测定值分别为0.006mg/L、0.006mg/L、0.010mg/L、0.015mg/L、0.011mg/L、0.010mg/L、0.010mg/L、0.010mg/L、0.013mg/L、0.015mg/L、0.015mg/L、0.015mg/L、0.012mg/L、0.014mg/L、0.010mg/L、0.005mg/L、0.005mg/L、0.012mg/L、0.012mg/L、0.005mg/L，请计算出该空白质控图的平均值、标准偏差、上控制限、上警告限和上辅助限。