Seepage Meter - Evaporation Lab Test

Water level change measured by a seepage meter installed in a 5-gallon bucket in the laboratory. The decline in water level is due only to evaporation. The standard deviation of the evaporation trend-removed data is 0.059 mm which is similar to the resolution of the meter’s analog to digital converter (0.050 mm). Less than 0.5% of the measurements were removed as outliers that generally coincided with ambient noise such as doors opening/closing, fans turning on/off, etc.本数据集系通过安装于实验室5加仑桶内的渗流计（seepage meter）测得的水位变化数据。本次实验中的水位下降仅由蒸发作用导致。经蒸发趋势去除处理后的数据的标准差为0.059毫米，与该仪器模数转换器（analog to digital converter）的分辨率（0.050毫米）相近。仅有不到0.5%的测量值被作为异常值移除，这些异常值通常与环境噪声（如门的开关、风扇启停等）相关。