=== GENERATING 1000 TEST RECORDS ===
Generated 1000 test records
Sample records:
  ID:   1 | Date: 2026-04-11 06:43:49 | Temp: -3°C | Humidity: 23% | Lat: 39.463000 | Lng: 21.234000
  ID:   2 | Date: 2025-04-27 04:23:05 | Temp:  0°C | Humidity: 53% | Lat: 39.232000 | Lng: 21.348000
  ID:   3 | Date: 2026-04-04 17:43:58 | Temp: -2°C | Humidity: 75% | Lat: 39.880000 | Lng: 20.981000

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