This is a straightforward indicated to true altitude. Use your CRP-5 by preference. Otherwise, 4 feet per 1000 feet amsl per degree off ISA. 3000 amsl, 998 HPa is roughly 3500' (3400', but that is too precise) Pressure Altitude so ISA is 8 degrees. The temperature is therefore 18 degrees cold, so the correction is 4 x 18 x 3 = 216 feet. The weather is cold so altimeter is over-reading, so you are clear at 3216 feet indicated.
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