Select the best alignment according to different measure of sequence conservation

The table describes for each sequence alignment basic statistics and the top oligonucleotides considering the following measures of sequence conservation:
-PIS: percentage of identical sites
-3'PIS: percentage of identical sites in the last five nucleotides at the 3' end of oligonucleotide
-PPI: percentage of pairwise identity

Summary of conservation values per alignment

Conservation measure		EbolaID_alig01	EbolaID_alig02	EbolaID_alig03	EbolaID_alig04	EbolaID_alig05	EbolaID_alig06	EbolaID_alig07
Global Statistics	Sequences Length % Identical sites % Pairwise identity	99 22790 20.8 71.8	101 18960 90.9 98.9	124 19560 34.8 85.7	160 24236 16 85.5	160 24236 16 85.5	215 20233 37 92.4	1611 19241 5.6 98.6
% of identical sites	Average Range Top Primer or Probe	27.90 0-60 EBOLAID042 EBOLAID051	94.64 70-100 EBOLAID001 EBOLAID002 EBOLAID004	55.29 0-94.74 EBOLAID039	41.46 0-84.21 EBOLAID039	41.46 0-84.21 EBOLAID039	57.95 5-89.47 EBOLAID039	31.41 0-90 EBOLAID054
3' end % of identical sites	Average Range Top Primer or Probe	30.00 0-100 EBOLAID057	95.25 80-100 EBOLAID001 EBOLAID002 EBOLAID003	60.00 0-100 EBOLAID017 EBOLAID023 EBOLAID025	48.00 0-100 EBOLAID017 EBOLAID027 EBOLAID036	48.00 0-100 EBOLAID017 EBOLAID027 EBOLAID036	62.25 0-100 EBOLAID023 EBOLAID025 EBOLAID027	57.75 0-100 EBOLAID004 EBOLAID005 EBOLAID006
% of pairwise identity	Average Range Top Primer or Probe	75.55 57.59-91.4 EBOLAID042	99.28 94.86-100 EBOLAID001 EBOLAID002 EBOLAID004	91.03 73.31-98.3 EBOLAID039	91.71 81.46-99 EBOLAID040	91.71 81.46-99 EBOLAID040	95.59 88.07-99.02 EBOLAID039	99.91 99.17-100 EBOLAID030 EBOLAID042 EBOLAID046