Sr. No. Symbol Variables/Properties Calculation Unit 1 D Event duration $D={T}_{\text{end}}-{T}_{\text{begin}}+15\left[\mathrm{min}\right]$ min 2 ${D}_{i}$ Intra-event dry periods ${D}_{i}=\sum _{t={T}_{\text{begin}}}^{t={T}_{\text{end}}}{R}_{d}$ with ${I}_{d}=\left\{\begin{array}{l}15,\text{if}{I}_{d}=0\left[\text{mm}\right]\\ 0\text{else}\end{array}$ min 3 ${D}_{p}$ Total Depth ${D}_{p}=\sum _{d={T}_{\text{begin}}}^{d={T}_{\text{end}}}{R}_{d}$ mm 4 ${R}_{m}$ Mean event rain rate ${R}_{m}=\frac{1}{D}\sum _{t={T}_{\text{begin}}}^{t={T}_{\text{end}}}{R}_{t}$ mmh−1 5 ${R}_{\mathrm{max}}$ Maximum rain rate ${R}_{\mathrm{max}}=\mathrm{max}\left({R}_{t}\right)$ mmh−1 6 IET Previous inter-event time $\begin{array}{l}IET={T}_{\text{begin}}\left(\text{currentevent}\right)\\ \text{}-{T}_{\text{end}}\left(\text{Previousevent}+15\right)\end{array}$ min 7 ${T}_{mx}$ Time to peak ${T}_{mx}=\frac{{t}^{mx}}{D}$ min 8 ${D}^{mx}$ The fraction of event depth until event maximum ${D}^{mx}=\frac{{\sum }_{d={T}_{begin}}^{{d}^{mx}}{D}_{d}}{{D}_{p}}$ 9 ${D}_{d%}$ The fraction of intra event rainless periods ${D}_{d%}=\frac{{D}_{i}}{D}$ %