ASCII-text files that contain useful information for data analysis, e.g., antenna conditions, weather, etc.
Unit of storage
One file per a month
### 99/03/10 Due to an ice sticked to 84 antenna dishes, data quality is not good during the following times (before the sun shined and melt the ice): Mar. 10, 00:00 UT - Mar.10, 02:30 UT.