momenta for both muons are greater than 20GeV North to South 10 deg < zenith angle <= 30 deg : 0 : zenith angle :number of events= 2842 mean = 0.173246 width = 0.517144 azimuth angle :number of events= 2845 mean = 0.19224 width = 0.534014 1 : zenith angle :number of events= 3403 mean = 0.196713 width = 0.495246 azimuth angle :number of events= 3374 mean = 0.0758395 width = 0.500159 2 : zenith angle :number of events= 3472 mean = 0.196457 width = 0.504854 azimuth angle :number of events= 3453 mean = -0.050407 width = 0.505328 3 : zenith angle :number of events= 3381 mean = 0.145643 width = 0.51302 azimuth angle :number of events= 3392 mean = -0.203686 width = 0.548646 30 deg < zenith angle <= 50 deg : 0 : zenith angle :number of events= 3981 mean = 0.119843 width = 0.482087 azimuth angle :number of events= 3985 mean = 0.191213 width = 0.507014 1 : zenith angle :number of events= 3836 mean = 0.155857 width = 0.462841 azimuth angle :number of events= 3810 mean = 0.0631362 width = 0.482045 2 : zenith angle :number of events= 3892 mean = 0.146255 width = 0.461278 azimuth angle :number of events= 3871 mean = -0.0356373 width = 0.500602 3 : zenith angle :number of events= 4960 mean = 0.124595 width = 0.494508 azimuth angle :number of events= 4967 mean = -0.189775 width = 0.534673 50 deg < zenith angle <= 70 deg : 0 : zenith angle :number of events= 1056 mean = 0.080512 width = 0.475729 azimuth angle :number of events= 1060 mean = 0.246963 width = 0.467144 1 : zenith angle :number of events= 650 mean = 0.0952691 width = 0.386064 azimuth angle :number of events= 648 mean = 0.0474478 width = 0.464707 2 : zenith angle :number of events= 698 mean = 0.0792439 width = 0.388988 azimuth angle :number of events= 698 mean = -0.0263011 width = 0.445258 3 : zenith angle :number of events= 1452 mean = 0.0875854 width = 0.461156 azimuth angle :number of events= 1460 mean = -0.185165 width = 0.447917 South to North 10 deg < zenith angle <= 30 deg : 0 : zenith angle :number of events= 3259 mean = -0.182936 width = 0.500622 azimuth angle :number of events= 3251 mean = -0.234593 width = 0.535999 1 : zenith angle :number of events= 3836 mean = -0.23382 width = 0.495922 azimuth angle :number of events= 3815 mean = -0.0725305 width = 0.49963 2 : zenith angle :number of events= 3916 mean = -0.201006 width = 0.482509 azimuth angle :number of events= 3893 mean = 0.0574825 width = 0.496919 3 : zenith angle :number of events= 3838 mean = -0.179936 width = 0.515138 azimuth angle :number of events= 3837 mean = 0.215376 width = 0.535941 30 deg < zenith angle <= 50 deg : 0 : zenith angle :number of events= 4203 mean = -0.140563 width = 0.486797 azimuth angle :number of events= 4223 mean = -0.209734 width = 0.524448 1 : zenith angle :number of events= 4235 mean = -0.136389 width = 0.455628 azimuth angle :number of events= 4211 mean = -0.0440484 width = 0.487998 2 : zenith angle :number of events= 4207 mean = -0.125761 width = 0.466978 azimuth angle :number of events= 4183 mean = 0.0366855 width = 0.48517 3 : zenith angle :number of events= 5400 mean = -0.115237 width = 0.488568 azimuth angle :number of events= 5407 mean = 0.182183 width = 0.5245 50 deg < zenith angle <= 70 deg : 0 : zenith angle :number of events= 1090 mean = -0.0616142 width = 0.457675 azimuth angle :number of events= 1094 mean = -0.202227 width = 0.467926 1 : zenith angle :number of events= 705 mean = -0.0752894 width = 0.425672 azimuth angle :number of events= 696 mean = -0.0553769 width = 0.3978 2 : zenith angle :number of events= 742 mean = -0.0845135 width = 0.433614 azimuth angle :number of events= 734 mean = 0.0195493 width = 0.440487 3 : zenith angle :number of events= 1600 mean = -0.0611117 width = 0.478735 azimuth angle :number of events= 1606 mean = 0.230631 width = 0.458711 momenta for both muons are , 20 < p < 50GeV North to South 10 deg < zenith angle <= 30 deg : 0 : zenith angle :number of events= 401 mean = 0.270341 width = 0.616735 azimuth angle :number of events= 399 mean = 0.393013 width = 0.776935 1 : zenith angle :number of events= 414 mean = 0.21942 width = 0.604322 azimuth angle :number of events= 410 mean = 0.126105 width = 0.821971 2 : zenith angle :number of events= 409 mean = 0.284864 width = 0.641727 azimuth angle :number of events= 407 mean = -0.0519173 width = 0.732317 3 : zenith angle :number of events= 513 mean = 0.247252 width = 0.660781 azimuth angle :number of events= 519 mean = -0.34566 width = 0.709117 30 deg < zenith angle <= 50 deg : 0 : zenith angle :number of events= 500 mean = 0.119346 width = 0.56576 azimuth angle :number of events= 505 mean = 0.438041 width = 0.603444 1 : zenith angle :number of events= 326 mean = 0.321689 width = 0.627057 azimuth angle :number of events= 321 mean = 0.137629 width = 0.767539 2 : zenith angle :number of events= 325 mean = 0.288928 width = 0.647883 azimuth angle :number of events= 326 mean = -0.015236 width = 0.88611 3 : zenith angle :number of events= 635 mean = 0.202156 width = 0.709003 azimuth angle :number of events= 638 mean = -0.367876 width = 0.730121 50 deg < zenith angle <= 70 deg : 0 : zenith angle :number of events= 120 mean = 0.0162599 width = 1.16661 azimuth angle :number of events= 121 mean = 0.524405 width = 1.40839 1 : zenith angle :number of events= 38 mean = 0.105213 width = 1.46629 azimuth angle :number of events= 38 mean = -0.378064 width = 3.81837 2 : zenith angle :number of events= 29 mean = -0.20447 width = 3.06975 azimuth angle :number of events= 29 mean = -0.42019 width = 2.47405 3 : zenith angle :number of events= 148 mean = 0.381546 width = 1.39812 azimuth angle :number of events= 150 mean = -0.319806 width = 0.99165 South to North 10 deg < zenith angle <= 30 deg : 0 : zenith angle :number of events= 544 mean = -0.328481 width = 0.63192 azimuth angle :number of events= 539 mean = -0.447035 width = 0.859905 1 : zenith angle :number of events= 490 mean = -0.51997 width = 0.758364 azimuth angle :number of events= 487 mean = -0.0813305 width = 0.697883 2 : zenith angle :number of events= 509 mean = -0.220824 width = 0.585291 azimuth angle :number of events= 507 mean = 0.165315 width = 0.723087 3 : zenith angle :number of events= 542 mean = -0.267755 width = 0.558052 azimuth angle :number of events= 540 mean = 0.421905 width = 0.70725 30 deg < zenith angle <= 50 deg : 0 : zenith angle :number of events= 530 mean = -0.236697 width = 0.63625 azimuth angle :number of events= 533 mean = -0.485926 width = 0.611301 1 : zenith angle :number of events= 336 mean = -0.279052 width = 0.689953 azimuth angle :number of events= 335 mean = -0.067246 width = 0.867315 2 : zenith angle :number of events= 380 mean = -0.367279 width = 1.08847 azimuth angle :number of events= 374 mean = 0.108432 width = 0.748852 3 : zenith angle :number of events= 668 mean = -0.232852 width = 0.574679 azimuth angle :number of events= 671 mean = 0.34513 width = 0.801933 50 deg < zenith angle <= 70 deg : 0 : zenith angle :number of events= 127 mean = -0.124574 width = 1.11786 azimuth angle :number of events= 127 mean = -0.602021 width = 1.61427 1 : zenith angle :number of events= 44 mean = 4.12929 width = 6.88431 azimuth angle :number of events= 41 mean = -0.0752057 width = 2.50814 2 : zenith angle :number of events= 42 mean = 0.0356873 width = 2.49379 azimuth angle :number of events= 41 mean = 0.626045 width = 3.1129 3 : zenith angle :number of events= 158 mean = -0.0260572 width = 0.844834 azimuth angle :number of events= 158 mean = 0.363261 width = 1.2023 one muon is 20 < p < 50GeV and the other is p > 50GeV North to South 10 deg < zenith angle <= 30 deg : 0 : zenith angle :number of events= 1303 mean = 0.208827 width = 0.536844 azimuth angle :number of events= 1307 mean = 0.182556 width = 0.544931 1 : zenith angle :number of events= 1597 mean = 0.248106 width = 0.541637 azimuth angle :number of events= 1585 mean = 0.0704195 width = 0.531484 2 : zenith angle :number of events= 1548 mean = 0.262873 width = 0.539503 azimuth angle :number of events= 1538 mean = -0.0591334 width = 0.544074 3 : zenith angle :number of events= 1513 mean = 0.175089 width = 0.539332 azimuth angle :number of events= 1513 mean = -0.243033 width = 0.568799 30 deg < zenith angle <= 50 deg : 0 : zenith angle :number of events= 1765 mean = 0.144886 width = 0.531385 azimuth angle :number of events= 1761 mean = 0.202908 width = 0.558685 1 : zenith angle :number of events= 1558 mean = 0.190782 width = 0.546214 azimuth angle :number of events= 1548 mean = 0.0698659 width = 0.57064 2 : zenith angle :number of events= 1620 mean = 0.184421 width = 0.541106 azimuth angle :number of events= 1612 mean = -0.0556784 width = 0.600413 3 : zenith angle :number of events= 2176 mean = 0.154736 width = 0.526624 azimuth angle :number of events= 2180 mean = -0.23829 width = 0.576519 50 deg < zenith angle <= 70 deg : 0 : zenith angle :number of events= 468 mean = 0.118378 width = 0.55962 azimuth angle :number of events= 470 mean = 0.333205 width = 0.543305 1 : zenith angle :number of events= 206 mean = 0.10992 width = 0.879194 azimuth angle :number of events= 203 mean = 0.252549 width = 1.18161 2 : zenith angle :number of events= 244 mean = 0.0569194 width = 0.579062 azimuth angle :number of events= 245 mean = -0.0872911 width = 0.704126 3 : zenith angle :number of events= 620 mean = 0.0983713 width = 0.517083 azimuth angle :number of events= 626 mean = -0.240148 width = 0.47972 South to North 10 deg < zenith angle <= 30 deg : 0 : zenith angle :number of events= 1523 mean = -0.232037 width = 0.477678 azimuth angle :number of events= 1520 mean = -0.257592 width = 0.53862 1 : zenith angle :number of events= 1724 mean = -0.275668 width = 0.527611 azimuth angle :number of events= 1716 mean = -0.0911923 width = 0.539596 2 : zenith angle :number of events= 1734 mean = -0.257474 width = 0.53914 azimuth angle :number of events= 1725 mean = 0.073649 width = 0.521525 3 : zenith angle :number of events= 1810 mean = -0.22777 width = 0.552949 azimuth angle :number of events= 1813 mean = 0.237396 width = 0.611028 30 deg < zenith angle <= 50 deg : 0 : zenith angle :number of events= 1910 mean = -0.163068 width = 0.528606 azimuth angle :number of events= 1920 mean = -0.246089 width = 0.572411 1 : zenith angle :number of events= 1746 mean = -0.192986 width = 0.524825 azimuth angle :number of events= 1735 mean = -0.0517473 width = 0.569286 2 : zenith angle :number of events= 1661 mean = -0.180413 width = 0.51145 azimuth angle :number of events= 1651 mean = 0.071224 width = 0.573521 3 : zenith angle :number of events= 2428 mean = -0.131926 width = 0.524644 azimuth angle :number of events= 2431 mean = 0.234883 width = 0.568965 50 deg < zenith angle <= 70 deg : 0 : zenith angle :number of events= 470 mean = -0.139668 width = 0.491682 azimuth angle :number of events= 473 mean = -0.321636 width = 0.507404 1 : zenith angle :number of events= 233 mean = -0.176925 width = 0.74727 azimuth angle :number of events= 230 mean = -0.145241 width = 0.874135 2 : zenith angle :number of events= 261 mean = -0.207459 width = 0.755176 azimuth angle :number of events= 258 mean = 0.0296556 width = 0.892323 3 : zenith angle :number of events= 696 mean = -0.0381013 width = 0.553443 azimuth angle :number of events= 701 mean = 0.272421 width = 0.529719 momenta for both muons are, p > 50GeV North to South 10 deg < zenith angle <= 30 deg : 0 : zenith angle :number of events= 1138 mean = 0.115426 width = 0.438762 azimuth angle :number of events= 1139 mean = 0.134076 width = 0.429652 1 : zenith angle :number of events= 1392 mean = 0.145224 width = 0.395019 azimuth angle :number of events= 1379 mean = 0.0484171 width = 0.381694 2 : zenith angle :number of events= 1515 mean = 0.128679 width = 0.404715 azimuth angle :number of events= 1508 mean = -0.0463915 width = 0.401043 3 : zenith angle :number of events= 1355 mean = 0.105474 width = 0.409497 azimuth angle :number of events= 1360 mean = -0.117884 width = 0.450004 30 deg < zenith angle <= 50 deg : 0 : zenith angle :number of events= 1716 mean = 0.0898244 width = 0.397728 azimuth angle :number of events= 1719 mean = 0.150946 width = 0.401708 1 : zenith angle :number of events= 1952 mean = 0.120157 width = 0.365966 azimuth angle :number of events= 1941 mean = 0.0450049 width = 0.356966 2 : zenith angle :number of events= 1947 mean = 0.114284 width = 0.372398 azimuth angle :number of events= 1933 mean = -0.025266 width = 0.377324 3 : zenith angle :number of events= 2149 mean = 0.0999172 width = 0.398586 azimuth angle :number of events= 2149 mean = -0.124729 width = 0.413329 50 deg < zenith angle <= 70 deg : 0 : zenith angle :number of events= 468 mean = 0.0616212 width = 0.330189 azimuth angle :number of events= 469 mean = 0.165004 width = 0.355802 1 : zenith angle :number of events= 406 mean = 0.0251473 width = 0.309729 azimuth angle :number of events= 407 mean = -0.0205098 width = 0.364964 2 : zenith angle :number of events= 425 mean = 0.0579019 width = 0.355272 azimuth angle :number of events= 424 mean = 0.0126158 width = 0.315091 3 : zenith angle :number of events= 684 mean = 0.0614962 width = 0.352686 azimuth angle :number of events= 684 mean = -0.0917943 width = 0.333574 South to North 10 deg < zenith angle <= 30 deg : 0 : zenith angle :number of events= 1192 mean = -0.129991 width = 0.393888 azimuth angle :number of events= 1192 mean = -0.184455 width = 0.417418 1 : zenith angle :number of events= 1622 mean = -0.1659 width = 0.401115 azimuth angle :number of events= 1612 mean = -0.0611453 width = 0.374014 2 : zenith angle :number of events= 1673 mean = -0.155109 width = 0.373548 azimuth angle :number of events= 1661 mean = 0.0320855 width = 0.408298 3 : zenith angle :number of events= 1486 mean = -0.127709 width = 0.40508 azimuth angle :number of events= 1484 mean = 0.143925 width = 0.390419 30 deg < zenith angle <= 50 deg : 0 : zenith angle :number of events= 1763 mean = -0.1017 width = 0.398285 azimuth angle :number of events= 1770 mean = -0.126724 width = 0.392433 1 : zenith angle :number of events= 2153 mean = -0.0860822 width = 0.373533 azimuth angle :number of events= 2141 mean = -0.0414096 width = 0.365109 2 : zenith angle :number of events= 2166 mean = -0.100694 width = 0.383538 azimuth angle :number of events= 2158 mean = 0.0186091 width = 0.375527 3 : zenith angle :number of events= 2304 mean = -0.0771738 width = 0.393677 azimuth angle :number of events= 2305 mean = 0.11703 width = 0.39344 50 deg < zenith angle <= 70 deg : 0 : zenith angle :number of events= 493 mean = -0.00545791 width = 0.368728 azimuth angle :number of events= 494 mean = -0.119698 width = 0.384421 1 : zenith angle :number of events= 428 mean = -0.0928998 width = 0.332873 azimuth angle :number of events= 425 mean = -0.0316252 width = 0.296959 2 : zenith angle :number of events= 439 mean = -0.064256 width = 0.3357 azimuth angle :number of events= 435 mean = 0.07343 width = 0.325743 3 : zenith angle :number of events= 746 mean = -0.0694964 width = 0.364876 azimuth angle :number of events= 747 mean = 0.171501 width = 0.383552