| N | number of repetitions per dataset, i.e., number of sensors, cells, and lysosomes in SSME, APC, and LPC recordings, respectively |
| SD | standard deviation |
| SEM | standard error of the mean |
| R2 | adjusted R2 as an indicator of fit quality |
| Z’ | z’ prime value representing the quality of an assay, derived using z’ = [(AVGpos − 3SDpos/√N) − (AVGneg − 3SDneg/√N)]/(AVGpos − AVGneg), with AVGpos/neg being the mean values of positive and negative controls [44]. |