The  *3h.mat contain time averaged data after QC  

for SCAN/USCRN

The columns are

1. year
2. month
3. day
4. hour
5. min
6. sec
7. doy
8. pentad
9. T_HR_AVG  % air temp [k] 
10-14. Soil Moisture (layer1 -layer5) [m3/m3]
15-19. Soil Temp (1-5) [k]
20. SUR_TEMP  % surface temp [k] if has 


for Mesnet

1-9. the same as above
10-12.  Soil Moisture (layer1 -layer3) [m3/m3] 
13-15.  Soil temp (layer1 -layer3) [k]


for coresite

in situ SM varialbe "WASM" (column 8)


====================================================== 


for rootzone soil moisture

Msnet

[layer1 layer2 layer3] with vertical weights

[2 10 24]

SCAN and USCRN

[layer 1 layer2 layer3] with weights

[3 3 8]