benchmark, date, observer, organization, receiver, receiver_sn, receiver_type, antenna, antenna_sn, dome, height (m), slant height (m), interval, first_observation (s)
 pitn PITN_USGS, 2013-04-17,  JMS ,  USGS ,  ASHTECH,  ZE120023208 ,  Z-X ZE210,  ASH700936D_M,  CR14341,  NONE, 0.8622, 0.9169, 15, 171615
 pitn PITN_USGS, 2013-04-18,  JMS ,  USGS ,  ASHTECH,  ZE120023208 ,  Z-X ZE210,  ASH700936D_M,  CR14341,  NONE, 0.8622, 0.9169, 15, 0
 pitn PITN_USGS, 2013-04-19,  JMS ,  USGS ,  ASHTECH,  ZE120023208 ,  Z-X ZE210,  ASH700936D_M,  CR14341,  NONE, 0.8622, 0.9169, 15, 0
 pitn PITN_USGS, 2013-04-20,  JMS ,  USGS ,  ASHTECH,  ZE120023208 ,  Z-X ZE210,  ASH700936D_M,  CR14341,  NONE, 0.8622, 0.9169, 15, 0
 pitn PITN_USGS, 2015-06-25,  JLS ,  USGS ,  JAVAD,  00619 ,  TRE_G3TH SIGMA3.3.1,  ASH700936D_M,  CR14341,  NONE, 0.8274, 0.8829, 15, 161945
 pitn PITN_USGS, 2015-06-26,  JLS ,  USGS ,  JAVAD,  00619 ,  TRE_G3TH SIGMA3.3.1,  ASH700936D_M,  CR14341,  NONE, 0.8274, 0.8829, 15, 0
 pitn PITN_USGS, 2018-06-19,  JLS ,  USGS ,  JAVAD,  01659 ,  TRE_G3TH SIGMA3.5.1,  ASH700936D_M,  CR14244,  NONE, 0.8253, 0.8809, 15, 171530
 pitn PITN_USGS, 2018-06-20,  JLS ,  USGS ,  JAVAD,  01659 ,  TRE_G3TH SIGMA3.5.1,  ASH700936D_M,  CR14244,  NONE, 0.8253, 0.8809, 15, 0
 pitn PITN_USGS, 2018-06-21,  JLS ,  USGS ,  JAVAD,  01659 ,  TRE_G3TH SIGMA3.5.1,  ASH700936D_M,  CR14244,  NONE, 0.8253, 0.8809, 15, 0
 pitn PITN_USGS, 2018-06-22,  JLS ,  USGS ,  JAVAD,  01659 ,  TRE_G3TH SIGMA3.5.1,  ASH700936D_M,  CR14244,  NONE, 0.8253, 0.8809, 15, 0