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TPS3808: CT Equation confirmation

Part Number: TPS3808

Hello,

I found a small discrepancy between the equations and values shown in the datasheet spec table that I'd like clarification on.  
 

For a typical delay of 1.25ms we’d calculate: CT(nF) = 175*[0.00125s - 0.0005s] = 0.131nF = 131pF.  The datasheet spec table lists this value as 100pF which is a 30% difference. 

For a typical delay of 1.2s we’d calculate:  CT(nF) = 175*[1.2s - 0.0005s] = 209.9nF.  The datasheet spec table lists this value as 180nF which again has a ~10% difference.

I noted there's a pretty wide tolerance on the delay times.  Were the spec table capacitance, or delay values, rounded, or am I applying the calculations incorrectly?