=== GENERATING 1000 TEST RECORDS ===
Generated 1000 test records
Sample records:
  ID:   1 | Date: 2026-03-04 04:13:45 | Temp: 20°C | Humidity: 73% | Lat: 39.464000 | Lng: 20.637000
  ID:   2 | Date: 2026-03-09 22:13:04 | Temp: 25°C | Humidity: 96% | Lat: 39.948000 | Lng: 21.234000
  ID:   3 | Date: 2026-02-14 01:00:47 | Temp:  5°C | Humidity: 27% | Lat: 39.348000 | Lng: 20.571000

=== TESTING WRITE OPERATIONS ===
ERROR: Cannot write CSV file