Descent: 0 feet (0 m)
Description:
Starting from Ramona, this road continues to climb up towards its
eventual dead-end. The traffic is light, the climbing is not.
This road, combined with Los Trancos and Ramona, climbs 1050 feet
in under 2 miles.
Altimeter altitude
(Altitude linearly interpolated from altimeter
samples, and smoothed with a 0.04mi gaussian.)
Each horizontal line is 100 feet. Each vertical
line is 0.2 miles. Gradiometer grade
(Grade linearly interpolated from gradiometer
samples, and smoothed with a 0.04mi gaussian.)
Each horizontal line is 2% grade. Each vertical
line is 0.2 miles. Altimeter grade
(Grade linearly interpolated from altimeter
samples, and smoothed with a 0.20mi gaussian.)
Each horizontal line is 2% grade. Each vertical
line is 0.2 miles. Comparison of grades
(Green grade is from the gradiometer, magenta grade
is from the altimeter, and white is where they
overlap.)
Each horizontal line is 2% grade. Each vertical
line is 0.2 miles.
Overall (averaging my first 20 hills),
the gradiometer grade averages 0.63 (% grade)
higher than the altimeter grade, with a standard
deviation of 4.5 (% grade per road).
This error may be due to:
-
Uneven sampling -- I take more samples when the
hill gets steep.
-
Calibration error (of the gradiometer or
altimeter).
In the end, though, I think that each individual
sample is accurate to within about 2% for that
instantaneous segment of road. My results may
not always agree with my altimeter, but they are
generally repeatable within 1%. I think that
I just need to take more samples to generate
more accurate graphs.
Raw Data:
Dist Grade Alti. Location
---- ----- ------ --------
0.00 5% 1200 start - Ramona Road
0.02 15% 1210
0.07 16% 1240 183 Vista Verde
0.12 15% 1290
0.16 17% 1320 inside right turn
0.22 15% 1360 first look at nice view
0.24 15% 1380
0.29 -6% 1390 before Old Spanish
0.33 1% 1390
0.37 16% 1410
0.41 13% 1440
0.47 14% 1480
0.54 3% 1500
0.59 14% 1520 56 Vista Verde
0.63 15% 1550
0.67 14% 1580
0.73 13% 1610
0.81 13% 1670
0.86 8% 1710 dead end
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Lucas's
cycling gradiometer page.
