Therefore, the user of this data should not consider any of this data as valid without further verification.
Radio interference is one common source of bad data.
Human tampering is a problem at certain sites. Routine maintenance activities involve manual testing of rain gages, water level sensors and other measuring devices. Electronic switches on tipping-buckets occasionally malfunction causing falsely high rainfall reports. Lightning, which occurs frequently in this region, can cause false reports that may not be apparent. Consequently, some data inconsistencies between the base stations should be expected.