Photometry of symbiotic stars - an international campaign IV. Z And, EG And, R Aqr, UV Aur, TX CVn, T CrB, BF Cyg, CH Cyg, CI Cyg, V 1016 Cyg, AG Dra, CQ DRA (4 Dra), YY Her, V 443 Her, SS Lep, AG Peg, AX Per, FG Sge, V 1017 Sgr, FG SER (AS 296), PU Vul, A