Acceleration Due to Gravity at Sea Level   Degrees Latitude Feet/second2 Cm/second2 0 32.08730 978.0327 5 32.08858 978.0719 10 32.09240 978.1884 15 32.09865 978.3786 20 32.10712 978.6370 25 32.11757 978.9556 30 32.12969 979.3249 31 32.13228 979.4039 32 32.13492 979.4843 33 32.13761 979.5662 34 32.14034 979.6494 35 32.14310 979.7337 36 32.14591 979.8192 37 32.14874 979.9056 38 32.15161 979.9930 39 32.15450 980.0811 40 32.15741 980.1698 41 32.16034 980.2592 42 32.16329 980.3489 43 32.16625 980.4391 44 32.16921 980.5294 45 32.17218 980.6199 46 32.17515 980.7104 47 32.17811 980.8008 48 32.18107 980.8910 49 32.18402 980.9809 50 32.18696 981.0704 51 32.18987 981.1593 52 32.19277 981.2476 53 32.19564 981.3351 54 32.19848 981.4217 55 32.20130 981.5074 56 32.20407 981.5921 57 32.20681 981.6755 58 32.20951 981.7577 59 32.21216 981.8385 60 32.21476 981.9178 65 32.22694 982.2890 70 32.23746 982.6096 75 32.24599 982.8698 80 32.25228 983.0616 85 32.25614 983.1791 90 32.25744 983.2186   Acceleration due to Gravity (cm/s^2) at Altitude (h) = Acceleration Due to Gravity (cm/s^2) at Sea Level - 0.3086h where h is the altitude in kilometers