Export grid data to Excel

Hello,

I have a requirement to export a grid data to excel but I am confuse which smart service to be used for this.

The Data is like, I have 5 reason and each reason have 3 groups, each group have 9 stages, each stages have 5 column data.

the CDT/ Table fields are:

Id (Primary key)

Reason

group

stage

data1

data2

data3

data4

data5