Nested Json

[PradeepVats]

Kindly tell me how I access the 4 layers of nested data JSON data using react table - accessor gives me the example.
I read the docs of react -Table also, I cant resolve the problem.
Example of my data month wise and day wise
"years":
{"2019" :
{"August":
{"day_1" :
{"1PM" : "95",
"2PM" : "81",
"3PM" : "87",
"4PM" : "47",
"5PM" : "94"
},
Data show in table
Date 1PM 2PM 3PM 4PM 5PM
1 95 81 87 47 94