The developmental time of embryos between 17.5°C and 27.5°C is a species-specific function of temperature.

*End of cellularization to trachea fill in hours, where T is in °C.
†, the Pearson Product-Moment's Correlation Coefficient of determination, is calculated following a least-squares regression across all data points to a curve of the form ln(developmental time) = b+a.
‡ is the ratio between developmental times across a 10 degree interval, in this case between 27.5°C and 17.5°C. A value of 2.2 would indicate that development takes 2.2 times as long at 17.5°C than at 27.5°C.
#Curve fit through 30°C.

* 细胞化结束至气管充盈的时长（单位：小时），其中温度T的单位为摄氏度（°C）。
† 代表皮尔逊积矩判定系数（Pearson Product-Moment's Correlation Coefficient of determination），通过对全部数据点执行最小二乘回归，拟合为形如"ln(发育时长) = b + a"的曲线后计算得出。
‡ 代表10摄氏度温差区间内的发育时长比值，本案例中为27.5°C与17.5°C之间的比值。若该比值为2.2，则表示17.5°C下的发育时长为27.5°C下的2.2倍。
# 基于30°C数据的曲线拟合。