PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2018/05/23-19:42:50
G01     54.3           28.1               10.2 +/-    0.65      18.7 +/-    0.65  0.110 / 0.360
G06     178.1          21.3                0.8 +/-   46.70       1.7 +/-   46.70  0.080 / 0.470
G07     144.8          17.2               15.4 +/-    1.72      36.3 +/-    1.72  0.050 / 0.060
G11     46.2           19.6                9.6 +/-    0.98      21.3 +/-    0.98  0.070 / 0.070
G13     255.8          32.8               14.0 +/-    1.68      23.2 +/-    1.68  0.080 / 0.200
G15     288.9          16.0                9.4 +/-    1.65      22.9 +/-    1.65  0.060 / 0.160
G17     276.5          76.9               13.5 +/-    0.85      13.8 +/-    0.85  0.110 / 0.240
G19     239.2          54.3               15.7 +/-    0.94      18.8 +/-    0.94  0.090 / 0.290
G28     45.6           54.6               12.3 +/-    0.84      14.7 +/-    0.84  0.050 / 0.070
G30     147.2          45.6               14.5 +/-    0.66      19.4 +/-    0.66  0.050 / 0.060