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The spaghetti plot only shows the perturbed ENS members. Try to add the control forecast (from ENS) and the operational forecast to it as well. You should use different isoline colours for them.
Hints:
plot the control forecast with a thick green isoline. The control forecast is stored in the same file as the perturbed forecast members: spag_ens.grib. Read it in with this code:
Code Block f = read(data: g, type: "cf")
plot the operational forecast with thick red isoline. The operational forecast is stored in spag_oper.grib. Read it in with this code:
Code Block f = read("spag_oper.grib")
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