contact_id,contact_type,duration_minutes,is_verified,location,message_received,signal_strength,timestamp,witness_count
AC_2024_001,visual,99,False,"Atacama Desert, Chile",Greetings from Zeta Reticuli,9.6,2024-01-20T00:00:00,11
AC_2024_002,radio,152,False,"Mauna Kea Observatory, Hawaii",,5.6,2024-08-20T00:00:00,6
AC_2024_003,telepathic,19,False,"Very Large Array, New Mexico",,4.5,2024-11-15T00:00:00,14
AC_2024_004,telepathic,46,False,"Roswell, New Mexico",,2.4,2024-02-24T00:00:00,9
AC_2024_005,telepathic,134,False,"SETI Institute, California",Warning about solar flare activity,6.4,2024-09-10T00:00:00,5
AC_2024_006,radio,20,False,"Area 51, Nevada",,2.7,2024-02-02T00:00:00,14
AC_2024_007,physical,138,True,"Atacama Desert, Chile",Request for peaceful contact,9.0,2024-03-25T00:00:00,10
AC_2024_008,radio,122,True,"Area 51, Nevada",Unknown language pattern identified,8.6,2024-11-30T00:00:00,13
AC_2024_009,visual,25,False,"Mauna Kea Observatory, Hawaii",,2.1,2024-09-27T00:00:00,13
AC_2024_010,physical,52,True,"Area 51, Nevada",,4.3,2024-06-12T00:00:00,11
AC_2024_011,radio,235,False,"Roswell, New Mexico",,3.7,2024-11-05T00:00:00,13
AC_2024_012,radio,111,False,International Space Station,,5.3,2024-07-04T00:00:00,10
AC_2024_013,visual,228,False,Antarctic Research Station,,6.8,2024-02-12T00:00:00,11
AC_2024_014,radio,113,False,"Atacama Desert, Chile",Mathematical sequence detected: prime numbers,7.2,2024-10-20T00:00:00,8
AC_2024_015,radio,9,False,"Roswell, New Mexico",,2.1,2024-01-02T00:00:00,13