Table 16. Ages of the magnetic reversals of the past 6 m.y., according to SBP90, H91, CK92, and this study. 
Event	 SBP90	 H91	 CK92	 This study	 Event	 
C1n (o)	 0.78	 	 0.780	 	 B/M
C1r.1n (t)	 0.99	 	 0.984	 	 Jaramillo (t)
C1r.1n (o)	 1.07	 	 1.049	 	 Jaramillo (o)
C1r.2n (t)	 1.77	 	 1.757	 	 Olduvai (t)
C1r.2n (o)	 1.95	 	 1.983	 	 Olduvai (o)
C2An.1n (t)	 2.60	 2.59/62	 2.600	 	 Gauss (t)
C2An.1n (o)	 	 3.04	 3.054	 3.046	 
C2An.2n (t)	 	 3.11	 3.127	 3.131	 
C2An.2n (o)	 	 3.22	 3.221	 3.233	 
C2An.3n (t)	 	 3.33	 3.325	 3.331	 Mammoth (o)
C2An.3n (o)	 	 3.58	 3.553	 3.594	 Gilbert (t)
C3n.1n (t)	 	 4.18	 4.033	 4.199	 Cochiti (t)
C3n.1n (o)	 	 4.29	 4.134	 4.316	 Cochiti (o)
C3n.2n (t)	 	 4.48	 4.265	 4.479	 Nunivak (t)
C3n.2n (o)	 	 4.62	 4.432	 4.623	 Nunivak (o)
C3n.3n (t)	 	 4.80	 4.611	 4.781	 Sidufjall (t)
C3n.3n (o)	 	 4.89	 4.694	 4.878	 Sidufjall (o)
C3n.4n (t)	 	 4.98	 4.812	 4.977	 Thvera (t)
C3n.4n (o)	 	 5.23	 5.046	 5.232	 Thvera (o)
C3An.1n (t)	 	 	 5.705	5.882a	 C3A.n1 (t)
C3An.1n (o)	 	 	 5.946	6.108a	 C3A.n1 (o)
C3An.2n (t)	 	 	 6.078	6.278a	 C3A.n2 (t)
a These values are regarded as tentative; we recommend using the figures in Table 17 until a more secure calibration is obtained for events in the late Miocene. (t) = termination; (o) = onset.