| Assamalla F-162 borehole | Estonia | 59.2318, 26.2897 | 17 | 5 | 46 | 48 | |
| Assamalla F-255 borehole | Estonia | 59.2301, 26.2810 | 14 | 5 | 41 | 52 | |
| Assamalla F-256 borehole | Estonia | 59.2303, 26.2641 | 12 | 4 | 104 | 79 | |
| Are 171 borehole | Estonia | 58.5319, 24.5871 | 23 | 180 | 520 | 321 | |
| Ardu borehole | Estonia | 59.0976, 25.3585 | 24 | 42 | 44 | 144 | |
| Asuküla borehole | Estonia | 58.8927, 23.5537 | 16 | 36 | 50 | 64 | |
| Asuküla 953 borehole | Estonia | 58.3673, 22.5674 | 0 | 0 | 0 | 0 | |
| Asuküla 2 borehole | Estonia | 58.3037, 25.3214 | 2 | 0 | 9 | 27 | |
| Atashiene 9 borehole | Latvia | 56.5462, 26.4000 | 29 | 90 | 289 | 436 | |
| Atla 886 borehole, Saaremaa | Estonia | 58.2953, 21.9545 | 0 | 0 | 0 | 0 | |
| Atla 981 borehole, Saaremaa | Estonia | 58.2948, 21.9003 | 0 | 0 | 0 | 0 | |
| Audaku 557 borehole | Estonia | 58.2981, 22.1008 | 1 | 2 | 1 | 0 | |
| Audevälja* borehole | Estonia | | 0 | 2 | 0 | 0 | |
| Audla 916 borehole | Estonia | 58.4969, 23.0821 | 1 | 0 | 0 | 0 | |
| Audla 936 borehole | Estonia | 58.4758, 23.0736 | 0 | 0 | 0 | 0 | |
| Auküla F-271 borehole | Estonia | 59.4079, 26.1826 | 9 | 4 | 50 | 142 | |
| Aula 691 borehole | Estonia | 58.3983, 22.3956 | 0 | 0 | 10 | 8 | |
| Adavere 382 borehole | Estonia | 58.7195, 25.8760 | 6 | 34 | 26 | 2 | |
| Austla 883 borehole | Estonia | 58.2852, 21.8801 | 0 | 0 | 0 | 0 | |
| Aste 749 borehole | Estonia | 58.3742, 22.4386 | 0 | 0 | 0 | 0 | |
| Aluksne 99 borehole | Latvia | 57.4082, 26.9115 | 27 | 137 | 183 | 215 | |
| Agama 696 borehole | Estonia | 58.3054, 22.0089 | 0 | 0 | 0 | 0 | |
| Ahtama F-323 borehole, Harjumaa | Estonia | 59.1779, 24.1309 | 3 | 0 | 14 | 14 | |
| Laiamäe F-259 borehole | Estonia | 59.2498, 26.1717 | 6 | 2 | 72 | 38 | |
| Aizpute 41 borehole | Latvia | 56.6411, 21.4143 | 35 | 696 | 1659 | 1595 | |
