Dоwnlоаd the seа level dаta frоm here: monthly_data_St_Pete_MSL.xlsx 1. Caculate (3 points) and plot the detrended sea levels (1 point). 2. Indicate the reference point (vertical datum) of the detrended sea levels (1 point). 3. Indicate the overall trend in mm/yr (1 points). 4. What does the trend represent and what type of hazard is it? (1 point)