treatment  lat     lon       day  bottle  PO4     NO2     NO3_NO2  NH4       SiO2    
HLLT       -76.50  173.47    4    7       1.750   0.0217  21.00   0.142     81.46   
HLLT       -76.50  173.47    4    8       1.800   0.0247  21.00   0.320     79.86   
HLLT       -76.50  173.47    4    9       1.840   0.0290  20.50   0.418     79.76   
HLLT       -76.50  173.47    4    10      1.730   0.0215  20.70   0.255     78.16   
HLLT       -76.50  173.47    4    11      1.770   0.0341  20.40   0.489     77.46   
HLLT       -76.50  173.47    4    12      1.770   0.0222  20.40   0.163     75.96