benchmark, date, observer, organization, receiver, receiver_sn, receiver_type, antenna, antenna_sn, dome, height (m), slant height (m), interval, first_observation (s)
 hil5 Hill_GPS_1995_NGS, 2003-09-10,  CHS ,  USGS ,  ASHTECH,  LP020000801 ,  Z-XII3 CD00,  ASH701945E_M,  CR620022602,  NONE, 1.3147, 1.3629, 30, 14510
 hil5 Hill_GPS_1995_NGS, 2003-09-13,  JMS ,  USGS ,  ASHTECH,  04600 ,  Z-XII3 CD00,  ASH701945E_M,  CR620022601,  NONE, 1.4348, 1.4819, 30, 151430
 hil5 Hill_GPS_1995_NGS, 2011-09-18,  CHS ,  USGS ,  ASHTECH,  ZE1200331018 ,  Z-X ZE210,  ASH701945B_M,  CR519993703,  NONE, 1.3703, 1.4179, 15, 143215
 hil5 Hill_GPS_1995_NGS, 2011-09-20,  CHS ,  USGS ,  ASHTECH,  ZE1200331018 ,  Z-X ZE210,  ASH701945B_M,  CR519993703,  NONE, 1.3904, 1.4379, 15, 14515
 hil5 Hill_GPS_1995_NGS, 2015-09-16,  SAH ,  USGS ,  ASHTECH,  ZE120023208 ,  Z-X ZE210,  ASH701945E_M,  CR620022602,  NONE, 1.1641, 1.2139, 15, 144815