From: Effect of temperature and relative humidity on the development times and survival of Synopsyllus fonquerniei and Xenopsylla cheopis, the flea vectors of plague in Madagascar
80 % + 90 %
80 %
90 %
X. cheopis
Threshold
12.36
12.34
12.71
R 2 - value
0.77
0.75
0.76
K - value
158.15
158
155
S. fonquerniei
9.26
9.14
8.57
0.45
0.40
0.47
361.6
360.77
345