Figure 10 in A long-term survey of spring monarch butterflies in north-central Florida

Figure 10. The yearly decline in oviposition rate at Cross Creek from 1994 to 2017, recorded as average eggs/stem (500 plant minimum each year) for the four weeks from 22 March to 18 April. (F = 11.501, p = 0.003, R2 = 0.390). Excluding the extraordinary high value in 1995, the decline by 1,18 linear regression is about 78%. Based on a total of 3545 eggs.