U.S. Geol. Survey, CH-07 (NOSR 2)             T 13S,R 18E,Sec 26
551799      444.5     450.3   0.7   2.0  97.0   0.3    1.7   4.8  0.000B1.0
541656      450.3     453.2   1.8   2.0  95.8   0.4    4.7   4.8  0.000B1.0
541657      453.2     456.4   6.8   2.1  90.0   1.1   18.0   4.9  0.911 1.0
            456.4     457.3   0.0B  0.0B  0.0B  0.0B   0.0B  0.0B 0.000B0.0B
541658      457.3     464.2  13.2   1.9  82.8   2.1   35.0   4.6  0.905 1.0
541659      464.2     465.1   3.9   1.8  93.6   0.7   10.3   4.3  0.911 1.0
541660      465.1     467.5   9.4   2.2  87.2   1.2   24.7   5.3  0.908 1.0
541661      467.5     468.7   8.1   2.3  88.6   1.0   21.4   5.5  0.905 1.0
541662      468.7     469.2   1.2   2.2  96.2   0.4    2.9   5.4  0.000B1.0
            469.2     470.0   0.0B  0.0B  0.0B  0.0B   0.0B  0.0B 0.000B0.0B
541663      470.0     471.3   4.7   1.3  93.3   0.7   12.5   3.1  0.894 1.0
541664      471.3     472.4   6.0   1.4  91.6   1.0   15.6   3.4  0.921 1.0
            472.4     473.0   0.0B  0.0B  0.0B  0.0B   0.0B  0.0B 0.000B0.0B
541667      473.0     475.1   3.2   1.2  94.8   0.8    8.6   2.9  0.886 1.0
551801      475.1     476.4   2.4   0.5  96.5   0.6    6.4   1.3  0.897 1.0
