Variance partitioning analysis for the temperature range (a and d), SD (b and e) and the ratio of temperature in floral center to edge (c and f) under natural sunlight (top row) and the artificial shade (bottom row) condition. The variables, flower shape, flower diameter, flower height and air temperature (T_air), altitude, PPFD selected by a stepwise regression were used. Different colors show the different biotic and abiotic factors.