https://hdl.handle.net/21.12132/3.f400460f95194803 1.0 https://instrumentdb.out.ocp.fmi.fi/instrument/f400460f-9519-4803-818f-e03245c00e12 KIT Pluvio² Karlsruhe Institute of Technology 04t3en479 OTT Hydromet GmbH OTT Pluvio² weighing rain gauge cumulative precipitation rainfall rate 2025-08-20