Number of Young SLSNe per year for three survey schemes

  Fast (1620 sq deg)       WIDE (3240 sq deg)        Combo (1600 sqdeg 1day)

        1                        2                            1
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This is scaled from the number we calculated for the white paper:
over 10,000 sq deg 1 day cadence, we get 7 young SLSNe per year.
Here young SLSNe are defined as younger than 20days after the explosion 
(constitute 10% of all SLSNe).