highly significantP < 0.001
Statistical analysis showed highly significant differences between spring and autumn ( χ 2 = 15, df = 1, P < 0.001), as well as summer and autumn ( χ 2 = 12.5, df = 1, P < 0.001) (Table 2 ).
Statistical analysis showed highly significant differences between spring and autumn ( χ 2 = 15, df = 1, P < 0.001), as well as summer and autumn ( χ 2 = 12.5, df = 1, P < 0.001) (Table 2 ).