Spotify do not always update their stats daily. There may be some days where the Spotify stats show a zero daily increase.
Stream counts for tracks can occasionally decrease, this occurs when Spotify removes streams from accounts they believe to be fraudulent.

Winner
Marco Mengoni
1 Day Increase: 1,518,594
2 Day Avg. Increase: 1,439,800

Out: Sanremo Final
Anna Oxa
1 Day Increase: 229,444
2 Day Avg. Increase: 235,399
Ariete
1 Day Increase: 648,881
2 Day Avg. Increase: 638,949
Articolo 31
1 Day Increase: 487,304
1 Day Avg. Increase: 487,304
Colapesce And Dimartino
1 Day Increase: 858,755
2 Day Avg. Increase: 938,590
Colla Zio
1 Day Increase: 386,395
2 Day Avg. Increase: 385,623
Coma_Cose
1 Day Increase: 744,276
2 Day Avg. Increase: 752,246
Elodie
1 Day Increase: 915,777
2 Day Avg. Increase: 906,780
Gianmaria
1 Day Increase: 536,447
2 Day Avg. Increase: 523,495
Giorgia
1 Day Increase: 416,330
1 Day Avg. Increase: 416,330
I Cugini di Campagna
1 Day Increase: 351,993
1 Day Avg. Increase: 351,993
LDA
1 Day Increase: 398,475
2 Day Avg. Increase: 427,293
Lazza
1 Day Increase: 2,344,141
2 Day Avg. Increase: 2,345,254
Leo Gassmann
1 Day Increase: 364,507
2 Day Avg. Increase: 362,056
Levante
1 Day Increase: 493,242
2 Day Avg. Increase: 517,702
Madame
1 Day Increase: 1,316,713
2 Day Avg. Increase: 1,353,961
Mara Sattei
1 Day Increase: 731,484
2 Day Avg. Increase: 745,215
Moda
1 Day Increase: 314,940
1 Day Avg. Increase: 314,940
Mr. Rain
1 Day Increase: 1,692,992
2 Day Avg. Increase: 1,561,301
Olly
1 Day Increase: 508,537
2 Day Avg. Increase: 494,295
Paola And Chiara
1 Day Increase: 749,969
1 Day Avg. Increase: 749,969
Rosa Chemical
1 Day Increase: 1,014,508
2 Day Avg. Increase: 1,004,310
Sethu
1 Day Increase: 325,800
2 Day Avg. Increase: 345,288
Shari
1 Day Increase: 295,306
2 Day Avg. Increase: 307,732
Tananai
1 Day Increase: 906,016
2 Day Avg. Increase: 950,978
Ultimo
1 Day Increase: 863,046
2 Day Avg. Increase: 823,080
Will
1 Day Increase: 329,971
2 Day Avg. Increase: 341,201