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Table 2:

Model parameters for the different solutions.

Solution 		Code Fs+c $\alpha$ $\Delta Q_{\rm H_2O}/Q_{\rm H_2O}$ $\Delta Q_{\rm CO}/Q_{\rm CO}$ $Q_{\rm H_2O}$ $Q_{\rm CO}$
    a b c d molecules s-1

#1 		HBH 0.05 0.45 0% 0% (0.88-1.72) $\times 10^{31}$ $(3.27 \pm 0.03 )\times 10^{30}$
#2 HBH06C 0.05 0.45 0% 30% (0.87-1.73) $\times 10^{31}$ $(1.30 \pm 0.08)\times 10^{30}$
#3 HBH06D 0.5 0.45 0% 30% (1.38-1.62) $\times 10^{31}$ $(1.32 \pm 0.07) \times 10^{30}$
#4 HBH06E 0.5 0.45 $\simeq$5% 30% (1.19-1.50) $\times 10^{31}$ $(1.27 \pm 0.02) \times 10^{30}$
#5 HBH06F 0.5 SMALL $\simeq$5% 30% (1.39 -1.65) $\times 10^{31}$ $(1.29 \pm 0.04) \times 10^{30}$

a Fs+c is the fraction of the solar flux assumed scattered towards the shadowed surface elements of the nucleus by dust particles; b parameter controlling the day-night asymmetry of photodissociative heating; c excess water production (under peak solar illumination) due to an assumed increase of the icy fraction inside the enhanced CO flux area; d fraction of $Q_{\rm CO}$ produced inside the enhanced CO flux area.


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