Tables

Table: 1.
Spectral model parameters and statistics of the annual pressure cycle of Mars at Lander 1 during two, selected years without great or global" dust storms. Amplitude of the fundamental and each of the four harmonics is given. The tabulated L_S is the value of the aerocentric longitude at the time nearest to the L_S of the starting sol for the analyzed year when the spectral component is zero and is upward moving. Also included in the L_S column (in parentheses) are the number of degrees of phase shift in terms of degrees, where 360 degrees is defined as one cycle for each component. Magnitude of the minimum, mean and maximum of the complete function (i.e. mean + fundamental +the four harmonics) are also tabulated. The first year is defined to begin at sol 405, $L_S\;\approx\; 330.2^\circ$ . The subsequent year begins at exactly the same L_S, 668.59692 sols later.

Component Amplitude $\rm L_S$ at nearest amp. $=\ 0.0$ (Phase)

~ Year 1 Year 2 Year 1 Year 2

~ Value Sigma Value Sigma Value Sigma Value Sigma

Fund. 0.661 0.00665 0.658 0.00591 223.2 0.75 223.9 0.76

~ ~ ~ ~ ~ (91.96) ~ (91.37) ~

Har. 1 0.574 0.00684 0.557 0.00557 31.6 0.30 33.1 0.30

~ ~ ~ ~ ~ (-129.23) ~ (-131.80) ~

Har. 2 0.113 0.00617 0.096 0.00486 352.5 1.02 356.8 1.01

~ ~ ~ ~ ~ (-66.20) ~ (-75.58) ~

Har. 3 0.065 0.00429 0.056 0.00383 331.2 1.09 333.8 1.09

~ ~ ~ ~ ~ (-4.04) ~ (-8.78) ~

Har. 4 0.014 0.00230 0.015 0.00224 324.8 1.81 327.3 1.80

~ ~ ~ ~ ~ (25.60) ~ (24.22) ~

~ Magnitude ~

~ Value Sigma Value Sigma ~

Mean 7.936 0.00497 7.942 0.00360 ~

% variance ~ ~ ~ ~ ~

remaining 0.348 ~ 0.694 ~ ~

~ ~ ~ ~ ~ ~

~ Magnitude $\rm L_S$ at min. or max.

Maximum ~ ~ ~ ~

Pressure 8.999 8.975 260.38 262.75

Minimum ~ ~ ~ ~

Pressure 6.813 6.839 148.37 148.07

**Table:** 1.
Spectral model parameters and statistics of the annual pressure cycle of Mars at Lander 1 during two, selected years without great or global" dust storms. Amplitude of the fundamental and each of the four harmonics is given. The tabulated L_S is the value of the aerocentric longitude at the time nearest to the L_S of the starting sol for the analyzed year when the spectral component is zero and is upward moving. Also included in the L_S column (in parentheses) are the number of degrees of phase shift in terms of degrees, where 360 degrees is defined as one cycle for each component. Magnitude of the minimum, mean and maximum of the complete function (i.e. mean + fundamental +the four harmonics) are also tabulated. The first year is defined to begin at sol 405, $L_S\;\approx\; 330.2^\circ$ . The subsequent year begins at exactly the same L_S, 668.59692 sols later.
Component	Amplitude	$\rm L_S$ at nearest amp. $=\ 0.0$ (Phase)
~	Year 1	Year 2	Year 1	Year 2
~	Value	Sigma	Value	Sigma	Value	Sigma	Value	Sigma
Fund.	0.661	0.00665	0.658	0.00591	223.2	0.75	223.9	0.76
~	~	~	~	~	(91.96)	~	(91.37)	~
Har. 1	0.574	0.00684	0.557	0.00557	31.6	0.30	33.1	0.30
~	~	~	~	~	(-129.23)	~	(-131.80)	~
Har. 2	0.113	0.00617	0.096	0.00486	352.5	1.02	356.8	1.01
~	~	~	~	~	(-66.20)	~	(-75.58)	~
Har. 3	0.065	0.00429	0.056	0.00383	331.2	1.09	333.8	1.09
~	~	~	~	~	(-4.04)	~	(-8.78)	~
Har. 4	0.014	0.00230	0.015	0.00224	324.8	1.81	327.3	1.80
~	~	~	~	~	(25.60)	~	(24.22)	~
~	Magnitude	~
~	Value	Sigma	Value	Sigma	~
Mean	7.936	0.00497	7.942	0.00360	~
% variance	~	~	~	~	~
remaining	0.348	~	0.694	~	~
~	~	~	~	~	~
~	Magnitude	$\rm L_S$ at min. or max.
Maximum	~	~	~	~
Pressure	8.999	8.975	260.38	262.75
Minimum	~	~	~	~
Pressure	6.813	6.839	148.37	148.07

Table: 2.
Spectral model parameters and statistics of the annual pressure cycle at Lander 2 for the identical time as Lander 1, year 1. The start time for this analyzed year has been adjusted for the difference in location on the planet (Viking Lander 2 is approximately half way around the planet from Lander 1 so the start time of Lander local VL-1 sol 405 is about 1/2 sol different from the start time of the corresponding VL-2 sol, which is 361 owing to VL-2's having landed 44 sols after VL-1. Since no appropriate second year analysis can be carried out due to the failure of VL-2 at sol 1050, the second year columns from Table~1 have been replaced with the ratio of VL-1, year~1 versus scaled VL-2, year~1 values. The scaling was first performed by multiplying each VL-2, year~1 amplitude by the ratio of VL1 over VL2 mean pressures where the VL2 values used are those from the improved fit which used a set of interpolated weights. Mean, minimum, maximum, L_S and phase shift in degrees are presented in the same way as those in Table~1.

Component Amplitude $\rm L_S$ at nearest amp. $=\ 0.0$ (Phase)

~ Year 1 V1/V2 ratio Year 1

~ Value Sigma Value Value Sigma

Fund. 0.798 0.00581 0.904 221.3 0.45

~ ~ ~ ~ (93.59) ~

Har. 1 0.613 0.00557 1.022 32.5 0.22

~ ~ ~ ~ (-131.37) ~

Har. 2 0.114 0.00539 1.075 352.9 0.88

~ ~ ~ ~ (-67.50) ~

Har. 3 0.063 0.00493 1.118 325.6 1.22

~ ~ ~ ~ (17.19) ~

Har. 4 0.018 0.00326 0.866 308.8 2.67

~ ~ ~ ~ (98.84) ~

~ Magnitude ~

~ Value Sigma Value ~

Mean 8.663 0.00401 1.000 ~

% variance ~ ~ ~ ~

remaining 0.957 ~ ~ ~

~ ~ ~ ~ ~

~ Magnitude $\rm L_S$ at min. or max.

Maximum ~ ~ ~

Pressure 9.808 ~ 259.82

Minimum ~ ~ ~

Pressure 7.403 ~ 149.12