PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2018/05/27-18:42:50
G01     76.5           33.3               12.3 +/-    1.76      20.1 +/-    1.76  0.110 / 0.150
G07     134.5          35.8               16.1 +/-    0.66      25.3 +/-    0.66  0.100 / 0.260
G11     57.8           34.4               12.8 +/-    1.25      20.5 +/-    1.25  0.030 / 0.080
G13     280.7          37.8               13.9 +/-    2.34      20.9 +/-    2.34  0.060 / 0.060
G15     307.3          13.7               10.9 +/-    1.51      28.0 +/-    1.51  0.040 / 0.030
G17     225.7          61.9               16.5 +/-    1.16      18.5 +/-    1.16  0.030 / 0.030
G18     53.2           20.6               12.0 +/-    7.08      26.1 +/-    7.08  0.060 / 0.080
G19     220.9          35.9               17.1 +/-    2.28      26.8 +/-    2.28  0.080 / 0.090
G28     11.3           60.3               13.6 +/-    1.24      15.4 +/-    1.24  0.370 / 0.310
G30     129.7          65.9               15.6 +/-    0.62      16.9 +/-    0.62  0.370 / 0.340