benchmark, date, observer, organization, receiver, receiver_sn, receiver_type, antenna, antenna_sn, dome, height (m), slant height (m), interval, first_observation (s)
 pstp, 2001-09-11,  WCH ,   ,  ASHTECH,  lp019992803 ,  Z-XII3 CD00,  ASH700936D_M,  CR14341,  NONE, 1.1842, 1.2338, 30, 1610
 pstp, 2001-09-21,  CHS ,   ,  ASHTECH,  lp020000801 ,  Z-XII3 CD00,  ASH701945B_M,  CR519993702,  NONE, 1.1781, 1.2278, 30, 154230
 pstp POST_P_StateHwyDept, 2005-09-13,  FFP ,  USGS ,  ASHTECH,  LP019992809 ,  Z-XII3 CD00,  ASH700936D_M,  CR14330,  NONE, 1.0597, 1.1109, 30, 16480
 pstp POST_P_StateHwyDept, 2005-09-24,  CHS ,  USGS ,  ASHTECH,  ZE1200331006 ,  Z-X ZE21,  ASH700936D_M,  CR14333,  NONE, 1.1965, 1.2459, 30, 153530
 pstp POST_P_StateHwyDept, 2010-09-13,  CHS ,  USGS ,  ASHTECH,  ZE120023202 ,  Z-X ZE210,  ASH701945B_M,  CR519993703,  NONE, 1.1418, 1.1919, 15, 155415
 pstp POST_P_StateHwyDept, 2010-09-14,  CHS ,  USGS ,  ASHTECH,  ZE120023202 ,  Z-X ZE210,  ASH701945B_M,  CR519993703,  NONE, 1.1712, 1.2209, 15, 154945