Download Speed Y-Axis

import matplotlib.pyplot as plt
import numpy as np
from mpl_toolkits.mplot3d import Axes3D
from matplotlib.colors import LinearSegmentedColormap
import matplotlib.cm as cm

fig = plt.figure(figsize=(12, 8), facecolor='white')
ax = fig.add_subplot(111, projection='3d')
ax.set_facecolor('white')

providers = 4
times = 6
xpos = np.arange(providers)
zpos = np.arange(times)
xpos, zpos = np.meshgrid(xpos, zpos)
xpos = xpos.flatten()
zpos = zpos.flatten()
ypos = np.zeros_like(xpos)

dx = 0.65
dz = 0.65
np.random.seed(3002)
dy = np.random.randint(50, 500, size=24)

cmap = LinearSegmentedColormap.from_list('', ['#F5276C', '#F5B027', '#6CF527'])
norm = plt.Normalize(min(dy), max(dy))
bar_colors = [cmap(norm(v)) for v in dy]

ax.bar3d(xpos, ypos, zpos, dx, dy, dz, color=bar_colors, alpha=0.9, edgecolor='#000000', linewidth=0.3)

sm = cm.ScalarMappable(cmap=cmap, norm=norm)
sm.set_array([])
cbar = fig.colorbar(sm, ax=ax, shrink=0.5, aspect=15, pad=0.1)
cbar.set_label('Speed (Mbps)', fontsize=10, color='#1f2937')
cbar.ax.tick_params(colors='#000000')

ax.set_xlabel('Provider', fontsize=11, color='#1f2937', labelpad=10)
ax.set_ylabel('Speed (Mbps)', fontsize=11, color='#1f2937', labelpad=10)
ax.set_zlabel('Time', fontsize=11, color='#1f2937', labelpad=10)
ax.set_title('Download Speed by Provider', fontsize=14, color='#1f2937', fontweight='bold', pad=20)

ax.set_xticks(range(4))
ax.set_xticklabels(['Fiber', 'Cable', 'DSL', '5G'])
ax.set_zticks(range(6))
ax.set_zticklabels(['6am', '9am', '12pm', '3pm', '6pm', '9pm'], fontsize=8)
ax.tick_params(colors='#000000', labelsize=9)

ax.xaxis.pane.fill = False
ax.yaxis.pane.fill = False
ax.zaxis.pane.fill = False
ax.xaxis.pane.set_edgecolor('#000000')
ax.yaxis.pane.set_edgecolor('#000000')
ax.zaxis.pane.set_edgecolor('#000000')
ax.grid(True, alpha=0.5, linewidth=0.5)
ax.xaxis._axinfo['grid']['color'] = '#000000'
ax.yaxis._axinfo['grid']['color'] = '#000000'
ax.zaxis._axinfo['grid']['color'] = '#000000'
ax.xaxis._axinfo['tick']['color'] = '#000000'
ax.yaxis._axinfo['tick']['color'] = '#000000'
ax.zaxis._axinfo['tick']['color'] = '#000000'
ax.xaxis.line.set_color('#000000')
ax.yaxis.line.set_color('#000000')
ax.zaxis.line.set_color('#000000')

ax.view_init(elev=25, azim=40)
plt.tight_layout()
plt.show()