PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2018/05/30-19:58:00
G01     40.5           15.4               10.1 +/-    2.28      24.8 +/-    2.28  0.110 / 0.200
G06     173.6          41.7               13.8 +/-    1.06      19.5 +/-    1.06  0.110 / 0.200
G13     236.6          21.1               14.7 +/-    3.92      31.5 +/-    3.92  0.210 / 0.300
G15     270.5          11.7               14.9 +/-    3.69      40.1 +/-    3.69  0.380 / 0.410
G17     357.8          70.8               12.6 +/-    0.42      13.2 +/-    0.42  0.130 / 0.110
G19     277.8          68.3               12.7 +/-    0.46      13.5 +/-    0.46  0.070 / 0.150
G24     315.9          20.8                9.4 +/-    3.29      20.2 +/-    3.29  0.070 / 0.060
G28     73.7           46.0               11.7 +/-    0.98      15.6 +/-    0.98  0.060 / 0.060
G30     154.9          25.8               14.5 +/-    1.23      27.8 +/-    1.23  0.150 / 0.320