treatment  lat     lon       day  bottle  PO4     NO2     NO3_NO2  NH4       SiO2    
HLLT       -76.50  173.47    2    7       1.920   0.0226  25.60   0.180     79.46   
HLLT       -76.50  173.47    2    8       1.930   0.0183  25.90   0.479     78.96   
HLLT       -76.50  173.47    2    9       1.930   0.0185  25.60   0.126     80.36   
HLLT       -76.50  173.47    2    10      1.930   0.0175  25.50   0.169     76.76   
HLLT       -76.50  173.47    2    11      1.940   0.0273  26.20   0.243     78.26   
HLLT       -76.50  173.47    2    12      1.970   0.0178  26.20   0.691     82.06