PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2018/07/13-16:58:10
G01     40.3           15.0                8.9 +/-   31.49      22.1 +/-   31.49  0.080 / 0.130
G06     172.8          42.6                8.9 +/-   31.88      12.5 +/-   31.88  0.070 / 0.110
G13     235.9          20.8               10.3 +/-   31.54      22.3 +/-   31.54  0.150 / 0.270
G15     271.6          11.3               11.4 +/-   34.36      30.8 +/-   34.36  0.120 / 0.320
G17     4.5            69.2                8.1 +/-   33.46       8.6 +/-   33.46  0.330 / 0.390
G19     276.9          67.7                9.7 +/-   32.35      10.4 +/-   32.35  0.120 / 0.190
G24     315.5          21.8               10.1 +/-   35.73      21.2 +/-   35.73  0.060 / 0.070
G28     73.9           46.0                8.2 +/-   33.44      10.9 +/-   33.44  0.050 / 0.060
G30     155.4          26.4                9.9 +/-   32.50      18.7 +/-   32.50  0.180 / 0.430