Table 4 The iteration result of linguistic term in PLTS

[− 3,0,3] → [0.2,0.5,0.8]

[0.6631,0.7582,0.7616]

[0.7610,0.7615,0.7615]

[0.7614,0.7615,0.7615]

\(\cdots\)

[0.7614,0.7615,0.7615]

[− 3,0,3] → [0.2,0.5,0.8]

[0.6657,0.7582,0.7616]

[0.7610,0.7615,0.7616]

[0.7615,0.7615,0.7616]

\(\cdots\)

[0.7615,0.7615,0.7616]

[− 3,0,3] → [0.2,0.5,0.8]

[0.6681,0.7593,0.7616]

[0.7611,0.7616,0.7616]

[0.7615,0.7616,0.7616]

\(\cdots\)

[0.7615,0.7616,0.7616]

[− 3,0,3] → [0.2,0.5,0.8]

[0.6135,0.7506,0.7612]

[0.7584,0.7608,0.7609]

[0.7606,0.7609,0.7609]

\(\cdots\)

[0.7606,0.7609,0.7609]

[− 3,0,3] → [0.2,0.5,0.8]

[0.6984,0.7609,0.7616]

[0.7615,0.7616,0.7616]

[0.7616,0.7616,0.7616]

\(\cdots\)

[0.7616,0.7616,0.7616]

[− 3,0,3] → [0.2,0.5,0.8]

[0.6606,0.7573,0.7615]

[0.7609,0.7615,0.7615]

[0.7614,0.7615,0.7615]

\(\cdots\)

[0.7614,0.7615,0.7615]

[− 3,0,3] → [0.2,0.5,0.8]

[0.6630,0.7581,0.7616]

[0.7609,0.7615,0.7616]

[0.7614,0.7615,0.7616]

\(\cdots\)

[0.7614,0.7615,0.7616]

[− 3,0,3] → [0.2,0.5,0.8]

[0.6495,0.7562,0.7615]

[0.7605,0.7614,0.7615]

[0.7613,0.7614,0.7615]

\(\cdots\)

[0.7613,0.7614,0.7615]

[− 3,0,3] → [0.2,0.5,0.8]

[0.6775,0.7598,0.7616]

[0.7613,0.7616,0.7616]

[0.7615,0.7616,0.7616]

\(\cdots\)

[0.7615,0.7616,0.7616]

[− 3,0,3] → [0.2,0.5,0.8]

[0.6877,0.7608,0.7616]

[0.7614,0.7616,0.7616]

[0.7616,0.7616,0.7616]

\(\cdots\)

[0.7616,0.7616,0.7616]

[− 3,0,3] → [0.2,0.5,0.8]

[0.6404,0.7518,0.7611]

[0.7600,0.7610,0.7608]

[0.7614,0.7615,0.7615]

\(\cdots\)

[0.7611,0.7610,0.7608]

[− 3,0,3] → [0.2,0.5,0.8]

[0.6731,0.7597,0.7616]

[0.7612,0.7616,0.7616]

[0.7615,0.7616,0.7616]

\(\cdots\)

[0.7615,0.7616,0.7616]

[− 3,0,3] → [0.2,0.5,0.8]

[0.6607,0.7584,0.7616]

[0.7609,0.7615,0.7616]

[0.7614,0.7615,0.7616]

\(\cdots\)

[0.7614,0.7615,0.7616]