Valid for hourly data files (/GR2/[year]/Hourly/GR2_[year][month][day].txt)
Columns headers are:
1. Year
2. Month
3. Day
4. Hour
5. Temperature (C)
6. Relative Humidity (%)
7. Soil Temperature - 25 cm (C)
8. Soil Temperature - 50 cm (C)
9. Soil Moisture - 25 cm (frac)
10. Soil Moisture - 50 cm (frac)
11. Snow Depth (m)