debug: x1:Array
(
    [0] => 34362
    [1] => 34557
    [2] => 35620
    [3] => 35644
    [4] => 36358
    [5] => 36504
    [6] => 36507
    [7] => 36509
    [8] => 36512
    [9] => 36518
    [10] => 36718
    [11] => 36719
    [12] => 38286
    [13] => 36751
    [14] => 31861
    [15] => 20790
    [16] => 34023
    [17] => 36993
    [18] => 36016
    [19] => 36175
    [20] => 38300
    [21] => 38188
    [22] => 38225
    [23] => 38393
    [24] => 38597
    [25] => 39042
    [26] => 39103
    [27] => 39309
    [28] => 39310
    [29] => 39940
)