PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2018/05/08-21:28:10
G01     40.3           15.1               11.6 +/-    1.43      28.9 +/-    1.43  0.130 / 0.340
G02     199.2          10.5                3.4 +/-   27.76       9.4 +/-   27.76  0.140 / 0.320
G06     173.9          41.8               18.8 +/-    1.02      26.6 +/-    1.02  0.060 / 0.160
G13     236.3          20.8               17.8 +/-    1.20      38.5 +/-    1.20  0.060 / 0.160
G15     269.6          11.6               14.9 +/-    2.03      40.2 +/-    2.03  0.130 / 0.290
G17     355.5          71.0               14.4 +/-    0.58      15.2 +/-    0.58  0.100 / 0.240
G19     280.3          68.9               14.0 +/-    0.59      14.9 +/-    0.59  0.170 / 0.280
G24     315.9          20.9               10.8 +/-    1.77      23.3 +/-    1.77  0.220 / 0.400
G28     74.4           45.7               14.6 +/-    1.10      19.4 +/-    1.10  0.050 / 0.070
G30     154.8          24.7               18.4 +/-    2.49      36.2 +/-    2.49  0.050 / 0.060