benchmark, date, observer, organization, receiver, receiver_sn, receiver_type, antenna, antenna_sn, dome, height (m), slant height (m), interval, first_observation (s)
 squa, 2003-09-20,  CHS ,  USGS ,  ASHTECH,  LP020000801 ,  Z-XII3 CD00,  ASH700936D_M,  CR14330,  NONE, 0.4244, 0.4968, 30, 14230
 squa, 2003-09-21,  CHS ,  USGS ,  ASHTECH,  LP020000801 ,  Z-XII3 CD00,  ASH700936D_M,  CR14330,  NONE, 0.4244, 0.4968, 30, 10
 squa SQUA_USGS, 2007-09-21,  SBM ,  USGS ,  ASHTECH,  LP019992804 ,  Z-XII 1L00,  ASH701945B_M,  CR519993706,  NONE, 1.1347, 1.1849, 30, 16320
 squa SQUA_USGS, 2007-09-30,  JLS ,  USGS ,  ASHTECH,  ZE1200331018 ,  Z-X ZE21,  ASH700936D_M,  CR14244,  NONE, 1.2288, 1.2778, 30, 145415
 squa SQUA_USGS, 2015-09-19,  JLS ,  USGS ,  JAVAD,  01663 ,  TRE_G3TH SIGMA3.5.9,  ASH700936D_M,  CR14330,  NONE, 0.6575, 0.7179, 15, 143145
 squa SQUA_USGS, 2015-09-28,  WRT ,  USGS ,  JAVAD,  00620 ,  TRE_G3TH SIGMA3.3.1,  ASH701945E_M,  CR520031615,  NONE, 1.0992, 1.1499, 15, 152445