. 2012 May 2;7(5):e35224. doi: 10.1371/journal.pone.0035224

Table 2. Mean 72 h LC₅₀ values (mS/cm) estimated from Kaplan-Meier functions of the taxa groups in each of the regions.

	E Aust	France	Israel	S Africa	K-M functions (df = 3)^#
C&O^*	43.0^a	29.7^b	37.6^a,b	35.8^a,b	κ² = 13.440, P = 0.004
Crust	51.1^a	27.1^b	36.5^a,b		κ² = 14.287, P = 0.003
D&H	25.1^a	30.4^a	20.7^a	25.0^a	κ² = 4.153, P = 0.245
Epheme	14.1^a	7.3^b	11.8^a,b	13.5^a,b	κ² = 13.089, P = 0.004
Mites	30.9	19.3	31.8
Non-Ar	16.7^a	13.9^a,b	18.1^a,b	10.9^b	κ² = 7.127, P = 0.068
T&P	22.4^a	16.6^a	12.3^b	22.3^a,b	κ² = 24.898, P<0.001

Values with different superscript letters are significantly different (at the 0.05 level) between the regions.

Statistical test of equality of the Kaplan-Meier functions between the regions.

C&O = Coleoptera and Odonata, Crust = Crustaceans, D&H = Diptera and Hemiptera, Epheme = Ephemeroptera, Mites = Hydracarina, Non-Ar = non-arthropods, T&P = Trichoptera and Plecoptera.

Table 2. Mean 72 h LC50 values (mS/cm) estimated from Kaplan-Meier functions of the taxa groups in each of the regions.

Table 2. Mean 72 h LC₅₀ values (mS/cm) estimated from Kaplan-Meier functions of the taxa groups in each of the regions.