This data.frame contains the water levels, barometric pressure, 
and earthtides for wipp30.  This is the dataset included in BETCO.
    
     
    wipp30
        
    
    A data.frame The columns are:
 - time
- time in hours 
- wl
- transducer pressure of water column 
- baro
- barometric pressure 
- et
- synthetic gravity 
Examples