I have a table and the description of the table as followed:
Table 7 presents the likelihood of OPT occurrences from the time annotated sentences; V-RB refers to the sentences which contain post-verbal adverbs and RB-V refers to the sentences which contain pre-verbal adverbs. The OPT phenomenon manifested 68.18% of the time when an already or yesterday adverb was present in the sentence in the ICE-SIN.
Within the paragraphs, my tenses were inconsistent. When i present the table and how to read the table I used present tense. But when I wanted to described the phenomenon that was recorded in the data, I used the past tense.
Is the inconsistent tenses grammatical? Or should I use the past tense when I present the table and how to read the table?