PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2018/05/16-22:28:10
G02     210.0          52.4               17.0 +/-    0.37      20.8 +/-    0.37  0.100 / 0.090
G06     89.6           78.9               12.9 +/-    0.25      13.1 +/-    0.25  0.120 / 0.110
G12     315.7          29.3               10.6 +/-    1.82      18.9 +/-    1.82  0.050 / 0.060
G17     48.3           40.3               11.0 +/-    1.20      15.9 +/-    1.20  0.070 / 0.060
G19     27.0           55.7               12.4 +/-    1.19      14.7 +/-    1.19  0.080 / 0.240
G24     276.5          42.5               13.7 +/-    1.22      19.1 +/-    1.22  0.080 / 0.240
G28     116.9          19.5               14.8 +/-    2.44      32.9 +/-    2.44  0.030 / 0.030