示例数据集
Right, above is a link to an image of a sub-segment of my data set. It is oriented in sets of 3 columns, with the first being a concentration, the second a qualifier, and the last an MDL - and continues for up to 95 samples (so a total of 285 columns making manual entry impractical) . How can i calculate the max or min of the concentration values for those that have a qualifier of "u" or vice versa have no qualifier?Right, above is a li