benchmark, date, observer, organization, receiver, receiver_sn, receiver_type, antenna, antenna_sn, dome, height (m), slant height (m), interval, first_observation (s)
 crk2, 1994-06-18,  Mossop Tony / Owen,  Stanford University ,  TRIMBLE 4000SSE,  3414A05698,  NP,  TRM22020.00+GP,  0080098672,  NONE, 1.3446, 0, 30, 33930
 crk2, 1994-06-19,  Mossop Tony / Owen,  Stanford University ,  TRIMBLE 4000SSE,  3414A05698,  NP,  TRM22020.00+GP,  0080098672,  NONE, 1.3446, 0, 30, 30
 crk2, 2013-03-17,  JMS ,  USGS ,  ASHTECH,  ZE1200526028 ,  Z-X ZE210,  ASH700936D_M,  CR14341,  NONE, 1.3965, 1.4439, 15, 0
 crk2, 2013-03-18,  JMS ,  USGS ,  ASHTECH,  ZE1200526028 ,  Z-X ZE210,  ASH700936D_M,  CR14341,  NONE, 1.3965, 1.4439, 15, 0