function pancam(filter::Symbol)
   filter == :L2 ? TSpec(PancamL2[:,1],PancamL2[:,2]) :
   filter == :L3 ? TSpec(PancamL3[:,1],PancamL3[:,2]) :
   filter == :L4 ? TSpec(PancamL4[:,1],PancamL4[:,2]) :
   filter == :L5 ? TSpec(PancamL5[:,1],PancamL5[:,2]) :
   filter == :L6 ? TSpec(PancamL6[:,1],PancamL6[:,2]) :
   filter == :L7 ? TSpec(PancamL7[:,1],PancamL7[:,2]) : nothing
end

const PancamL2 =
   [729.893842887474	   0.0;
    735.83864118896 	   0.0402542372881356;
    739.235668789809	   0.120762711864407;
    741.783439490446	   0.347457627118644;
    743.481953290871	   0.591101694915254;
    744.755838641189	   0.75635593220339;
    746.454352441614	   0.925847457627119;
    747.303609341826	   0.995762711864407;
    748.152866242038	   1.0;
    752.3991507431  	   0.976694915254237;
    755.796178343949	   0.976694915254237;
    756.645435244161	   0.955508474576271;
    757.494692144374	   0.938559322033898;
    757.91932059448	   0.915254237288136;
    758.768577494692	   0.864406779661017;
    759.617834394904	   0.805084745762712;
    760.891719745223	   0.722457627118644;
    761.740976645435	   0.574152542372881;
    763.014861995754	   0.461864406779661;
    764.713375796178	   0.288135593220339;
    767.261146496815	   0.154661016949153;
    768.95966029724 	   0.0911016949152542;
    771.082802547771	   0.0444915254237288;
    774.055201698514	   0.0233050847457627;
    776.602972399151	   0.0105932203389831;
    780.0           	   0.0]

const PancamL3 =
   [653.460721868365	   0.0;
    656.433121019108	   0.0211864406779661;
    658.980891719745	   0.0741525423728814;
    661.104033970276	   0.199152542372881;
    662.802547770701	   0.415254237288136;
    664.076433121019	   0.586864406779661;
    666.19957537155	   0.720338983050847;
    669.171974522293	   0.775423728813559;
    671.295116772824	   0.832627118644068;
    672.569002123142	   0.889830508474576;
    673.842887473461	   0.959745762711864;
    674.692144373673	   0.991525423728814;
    675.541401273885	   1.0;
    676.815286624204	   0.99364406779661;
    677.23991507431	   0.955508474576271;
    677.664543524416	   0.925847457627119;
    678.513800424629	   0.796610169491525;
    680.212314225053	   0.544491525423729;
    682.335456475584	   0.307203389830509;
    684.033970276009	   0.163135593220339;
    685.307855626327	   0.116525423728814;
    687.855626326964	   0.0550847457627119;
    689.129511677282	   0.0338983050847458;
    691.677282377919	   0.0148305084745763;
    695.074309978769	   0.0]

const PancamL4 =
   [580.000000000000    0.0;
    584.670912951168    0.0105932203389831;
    588.067940552017    0.0444915254237288;
    590.615711252654    0.152542372881356;
    593.588110403397    0.563559322033898;
    595.711252653928    0.930084745762712;
    596.985138004246    0.98728813559322;
    597.409766454352    0.997881355932203;
    598.259023354565    1.0;
    600.382165605096    0.991525423728814;
    602.929936305732    0.974576271186441;
    603.779193205945    0.974576271186441;
    604.628450106157    0.98728813559322;
    605.477707006369    0.98728813559322;
    606.751592356688    0.963983050847458;
    607.600849256900    0.930084745762712;
    608.874734607219    0.802966101694915;
    610.148619957537    0.629237288135593;
    611.847133757962    0.425847457627119;
    612.696390658174    0.298728813559322;
    613.970276008493    0.199152542372881;
    616.093418259023    0.103813559322034;
    618.216560509554    0.0593220338983051;
    619.915074309979    0.0338983050847458;
    622.462845010616    0.0169491525423729;
    625.010615711253    0.00635593220338983;
    630.106157112527    0.0]

const PancamL5 =
   [518.004246284501	   0.0;
    520.127388535032	   0.010593220339;
    521.40127388535	   0.025423728814;
    522.250530785563	   0.055084745763;
    524.7983014862	   0.415254237288;
    525.647558386412	   0.616525423729;
    526.496815286624	   0.690677966102;
    526.92144373673	   0.718220338983;
    529.044585987261	   0.737288135593;
    530.743099787686	   0.783898305085;
    531.592356687898	   0.824152542373;
    532.44161358811	   0.862288135593;
    533.290870488323	   0.904661016949;
    534.989384288747	   0.940677966102;
    537.112526539278	   0.959745762712;
    539.660297239915	   1.0;
    540.509554140127	   1.0;
    541.35881104034	   0.98093220339;
    541.783439490446	   0.96186440678;
    542.208067940552	   0.940677966102;
    542.632696390658	   0.887711864407;
    544.331210191083	   0.580508474576;
    545.605095541401	   0.341101694915;
    546.87898089172	   0.16313559322;
    548.152866242038	   0.091101694915;
    549.426751592357	   0.03813559322;
    550.700636942675	   0.01906779661;
    552.823779193206	   0.006355932203;
    560.042462845011	   0.0]

const PancamL6 =
   [450.063694267516	   0.0;
    455.15923566879	   0.004237288136;
    458.556263269639	   0.014830508475;
    459.405520169851	   0.01906779661;
    460.254777070064	   0.033898305085;
    461.528662420382	   0.080508474576;
    464.501061571125	   0.322033898305;
    465.350318471338	   0.411016949153;
    466.19957537155	   0.506355932203;
    467.473460721868	   0.563559322034;
    468.747346072187	   0.584745762712;
    470.021231422505	   0.622881355932;
    471.295116772824	   0.66313559322;
    472.144373673036	   0.701271186441;
    474.692144373673	   0.866525423729;
    476.390658174098	   0.911016949153;
    477.664543524416	   0.930084745763;
    481.486199575372	   0.930084745763;
    483.184713375796	   0.940677966102;
    484.883227176221	   0.963983050847;
    486.581740976645	   0.987288135593;
    488.28025477707	   1.0;
    489.978768577495	   0.991525423729;
    490.828025477707	   0.972457627119;
    491.677282377919	   0.947033898305;
    492.101910828025	   0.915254237288;
    492.951167728238	   0.877118644068;
    493.375796178344	   0.834745762712;
    493.80042462845	   0.786016949153;
    494.225053078556	   0.716101694915;
    495.498938428875	   0.516949152542;
    496.348195329087	   0.463983050847;
    498.046709129512	   0.28813559322;
    498.895966029724	   0.228813559322;
    500.594479830149	   0.177966101695;
    501.443736730361	   0.14406779661;
    503.142250530786	   0.08686440678;
    505.690021231423	   0.025423728814;
    509.936305732484	   0.008474576271;
    515.031847133758	   0.002118644068;
    524.7983014862	   0.0]

const PancamL7 =
   [380.0     	         0.0
    387.643312101911	   0.023305084746
    392.314225053079	   0.046610169492
    397.409766454352	   0.088983050847
    402.08067940552	   0.150423728814
    410.148619957537	   0.300847457627
    419.915074309979	   0.459745762712
    421.188959660297	   0.483050847458
    422.887473460722	   0.5
    428.407643312102	   0.578389830508
    433.07855626327	   0.677966101695
    436.475583864119	   0.777542372881
    439.023354564756	   0.817796610169
    440.72186836518	   0.83686440678
    447.091295116773	   0.932203389831
    450.488322717622	   1.0
    452.186836518047	   0.987288135593
    453.036093418259	   0.966101694915
    453.885350318471	   0.906779661017
    455.583864118896	   0.819915254237
    457.282377919321	   0.580508474576
    458.980891719745	   0.411016949153
    461.104033970276	   0.218220338983
    462.802547770701	   0.156779661017
    464.925690021231	   0.080508474576
    466.19957537155	   0.048728813559
    468.322717622081	   0.027542372881
    471.295116772824	   0.012711864407
    473.842887473461	   0.004237288136
    479.787685774947	   0.0]