CaCO
3
Location
2017
2018
1a
145
100
1b
120
110
1c
100
92
1d
100
76
2a
90
95
2b
80
55
2c
90
80
2d
80
64
3a
80
100
3b
80
90
3c
90
72
3d
80
80
4a
90
88
4b
90
80
4c
85
84
4d
95
60