Here are my statistics of the last few months, in millimeters. I have compared the values obtained with the "classic" VP2 tipping buckets, the new tipping spoon (metric version) and with the reference rain gauge (SPIEA) used in France.
From April 24 to April 30, 2019 (5 measurements) : SPIEA 33.6 mm, VP2 tipping spoon: 34.4 mm (+2.4%), VP2 tipping buckets : 32.6 mm (-3%)
May 2019 (12 measurements) : SPIEA 77.5 mm, VP2 tipping spoon: 80.2 mm (+3.5%), VP2 tipping buckets :76.4 mm (-1.4%)
June 2019 (8 measurements) : SPIEA 129.3 mm, VP2 tipping spoon: 134.6 mm (+4.1%), VP2 tipping buckets :134.2 mm (+3.8%)
From July 1 to July 21, 2019 (4 measurements) : SPIEA 10.6 mm, VP2 tipping spoon: 11.2 mm (+5.7%), VP2 tipping buckets :10.8 mm (+1.9%)
My VP2 new tipping spoon is over reporting rainfall, as already observed in this forum, but it seems this is going worst with time : + 2.4% in April and now +5.7%.
I will continue the comparison, without changing any calibration, to know how will evolve the measurements of the tipping spoon, and if it will stabilize at a certain point.