The four different strengths:
*'''"Traces" ''' - Shows for ore that is 1 tile away. Unlocked with Analyse at prospecting level 20.*'''"Slight traces" ''' - Shows for ore that is 2 tiles away. Unlocked with Analyse at prospecting level 20.*'''"Faint traces" ''' - Shows for ore that is 3 tiles away. Unlocked at prospecting level 35.*'''"Minuscule traces" ''' - Shows for ore that is 4 tiles away. Unlocked at prospecting level 40. (Needs confirmation) (Required level is >40)*'''"Vague traces" ''' - Shows for ore that is 5 tiles away. Unlocked at prospecting level 70. (Needs confirmation)*'''"Indistinct traces" ''' - Shows for ore that is 6 tiles away. Unlocked at prospecting level 85(?). (Needs confirmation)
The distance away from the analysed rock shard/tile is a square of radius equivalent to the distance.