import matplotlib.pyplot as plt
import numpy as np
from matplotlib import colormaps

temperatures = np.array(
    [
        [18, 19, 21, 24, 26, 27, 25],
        [16, 18, 20, 22, 24, 25, 23],
        [21, 22, 24, 27, 29, 30, 28],
        [15, 17, 19, 21, 23, 24, 22],
    ]
)