Table 3 Characterization of the events and the occurrence frequency of swimmer 1 in the eight times of observation. Criteria Times of Observation Settings(moles) N IE EMA 1st time 1b2,1b4,1c3,1t2,1p4 1b1,1b4,1c3,1t2,1p4 1b1,1b4,1c3,1t2,1p3 3 1 1 ,60 ,20 ,20 2nd time 1b8,1t5,1t7 1b8,1t6,1t7 1b9,1t6,1t7 1 1 3 ,20 ,20 ,60 1st time 2b2,2b5,2c2,2t1,2t4,2p4 5 1 PAP 2nd time 2b6,2p9 2b6,2p8 2b7,2p9 1 1 3 ,20 ,20 ,60 SAP 1st time 3b1,3b4,3c1,3t2,3p3 3b1,3b4,3c1,3t3,3p3 3b1,3b4,3c2,3t3,3p3 1 1 3 ,20 ,20 ,60 2nd time 3t5,3t8 5 1 SMRB 1st time 4b1,4c1,4t2,4t4,4p7 4b1,4c2,4t2,4t4,4p7 2 3 ,40 ,60 2nd time 4t7,4t12 4t8,4t12 3 2 ,60 ,40